On the measurement of the proton-air cross section using air shower data

Size: px
Start display at page:

Download "On the measurement of the proton-air cross section using air shower data"

Transcription

1 On the measurement of the proton-air cross section using air shower data Ralf Ulrich J. Blümer, R. Engel, F. Schüssler, M. Unger KIT, Forschungszentrum Karlsruhe Aspen 2007

2 Introduction Analysis methods Unaccompanied hadrons Frequency attenuation Distribution of X max RMS tail shape Sources of systematic uncertainties Cosmic ray composition Methodical Air shower fluctuations Hadronic interaction models Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 1 / 25

3 Overview Cross section (proton-air) [mb] Equivalent c.m. energy 2 3 Mielke et al Aglietta et al Baltrusaitis et al Honda et al Knurenko et al Nam et al Siohan et al Belov et al. Tevatron (p-p) [GeV] 4 QGSJET01 EPOS NEXUS3 SIBYLL2.1 QGSJETII log (Energy/eV) Energy [GeV] s pp LHC (p-p) LHC (C-C) 5 Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 2 / 25

4 Contributions to total cross section Ralf Ulrich On the measurement of the proton-air cross section using air shower data 3 / 25

5 First interaction and fluctuations in air showers primary particle atmospheric boundary fluctuations fluctuations (fluctuations) (fluctuations) ground level Ralf Ulrich On the measurement of the proton-air cross section using air shower data 4 / 25

6 Air shower profile fluctuations 6 N / electrons 19 protons, ev N / muons (N) RMS of log 0.3 minimum of shower fluctuations slant depth [gcm ] all simulations performed with CONEX Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 5 / 25

7 Air shower profile development (extended Heitler model) primary n=1 inel charged neutral n=2 π + π- πo n=3 n(charged) n(neutral) = 2 1 X max λ inel + λ e.m. ln( E 0 n mult E c ) Oppenheimer, Heitler, Matthews (2005) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 6 / 25

8 High energy hadronic interaction models probability EPOS, protons at ev 19 QGSJET, protons at ev 19 QGSJETII, protons at ev 19 SIBYLL, protons at ev 19 NEXUS, protons at ev probability E max / E total EPOS, protons at ev 19 QGSJET, protons at ev 19 QGSJETII, protons at ev 19 SIBYLL, protons at ev 19 NEXUS, protons at ev E e.m. / E total probability EPOS, protons at ev 19 QGSJET, protons at ev 19 QGSJETII, protons at ev 19 SIBYLL, protons at ev 19 NEXUS, protons at ev dp dx max P(n mult ) P(n inel ) P(r e.m. ) log (multiplicity) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 7 / 25

9 HE models microscopic parameters... parton distribution diffraction fragmentation... model cross section multiplicity elasticity... macroscopic parameters all macroscopic parameters are correlated Ralf Ulrich On the measurement of the proton-air cross section using air shower data 8 / 25

10 Composition - impact on X max fraction -1 SIBYLL 19 ev proton (58%) helium (30%) iron (%) gamma (2%) sum X max [gcm ] Uncertain composition above 15.5 ev impacts all air shower observables Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 9 / 25

11 Unaccompanied hadrons protons satellite ballone atmospheric boundary hadron calorimeter anti-coincidence array ground level experimental results from: Nam et al. (1975), Siohan et al. (1978), Mielke et al. (1994),... Ralf Ulrich On the measurement of the proton-air cross section using air shower data / 25

12 Unaccompanied hadrons protons satellite ballone atmospheric boundary hadron calorimeter anti-coincidence array ground level experimental results from: Nam et al. (1975), Siohan et al. (1978), Mielke et al. (1994),... Ralf Ulrich On the measurement of the proton-air cross section using air shower data / 25

13 Unaccompanied hadrons protons heavier primaries satellite ballone atmospheric boundary hadron calorimeter anti-coincidence array ground level experimental results from: Nam et al. (1975), Siohan et al. (1978), Mielke et al. (1994),... Ralf Ulrich On the measurement of the proton-air cross section using air shower data / 25

14 Unaccompanied hadrons - cross section φ(x) = 1 λ e X/λ Top of atmosphere φ top = φ(x top = 0gcm 2 ) by satellites, or φ top = φ(x top 5gcm 2 ) ballones Bottom of atmosphere φ bottom = φ(x ground ) measured by calorimeter Flux attenuation λ prod = X/ log(φ top /φ bottom ) with X = X bottom X top σ prod = σ tot σ el σ q el σ diffr Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 11 / 25

15 Frequency attenuation Attenuation of shower cascades in the atmosphere same energy proton showers atmospheric boundary N e air shower ground array ground level constant N µ equal E 0 constant N e same distance to X max experimental results from: Honda et al. (1993), Hara et al. (1999), Aglietta et al. (1999),... Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 12 / 25

16 Frequency attenuation Attenuation of shower cascades in the atmosphere same energy proton showers atmospheric boundary deeply penetrating N e N e air shower ground array ground level constant N µ equal E 0 constant N e same distance to X max experimental results from: Honda et al. (1993), Hara et al. (1999), Aglietta et al. (1999),... Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 12 / 25

17 Frequency attenuation Attenuation of shower cascades in the atmosphere same energy proton showers atmospheric boundary deeply penetrating Ne Ne air shower ground array Ne ground level constant N µ equal E 0 constant N e same distance to X max experimental results from: Honda et al. (1993), Hara et al. (1999), Aglietta et al. (1999),... Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 12 / 25

18 Frequency attenuation - examples AGASA like experiment (X obs =920gcm 2, (Ne) N e = 0.05, (Nµ) N µ = 0.1) (toy detector simulation, Φ E 2.7, 0 < θ < 60, protons only) frequency [arbitrary units] 3 frequency of events in (N /N µ ) bin e exponential attenuation, Λ= gcm entries < θ/deg < hist_ < θ/deg Entries < < θ/deg Mean < RMS < θ/deg < < log (N (E >1GeV)) < 6.25 µ µ 8.2 < log (N (E >1MeV)) < 8.4 e e sec(θ) X obs -X 1 [gcm ] observed attenuation is only partly due to cross section compare for example Alvarez-Muniz et al. (2002) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 13 / 25

19 N e sensitivity (proton-air) [mb] 1400 qgsjet 1200 qgsjetii sibyll 00 σ tot Energy reconstruction/selection accurate (E 0 = EeV), (Ne) N e Λ(attenuation) [gcm ] = 0.05, X obs =920gcm 2 Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 14 / 25

20 N e sensitivity (proton-air) [mb] 1400 qgsjet 1200 qgsjetii sibyll 00 σ tot Λ 5gcm 2 σ 300mb Energy reconstruction/selection accurate (E 0 = EeV), (Ne) N e Λ(attenuation) [gcm ] = 0.05, X obs =920gcm 2 Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 14 / 25

21 X max distribution: tail and fluctuations fraction -1-3 RMS tail (exp(-x/λ)) λ int = k Λ obs = <M> σ int -4 all detector effects and fluctuations are contained in k X max [gcm ] RMS Walker & Watson (Havera Park, 1982) Linsley (1985) tail Baltrusaitis et al. (Fly s eye, 1984) Knurenko et al. (Yakutsk, 1999) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 15 / 25

22 X max sensitivity (proton-air) [mb] (proton-air) [mb] qgsjet qgsjetii sibyll σ tot 00 σ tot Λ(X ) [gcm ] max RMS(X ) [gcm ] max X max-resolution is 30gcm 2. Energy reconstruction is accurate (E 0 = EeV). Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 16 / 25

23 X max sensitivity (proton-air) [mb] (proton-air) [mb] qgsjet qgsjetii sibyll σ tot 00 σ tot Λ(X ) [gcm ] max RMS(X ) [gcm ] max X max-resolution is 30gcm 2. Energy reconstruction is accurate (E 0 = EeV). Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 16 / 25

24 Deconvolution of X max -distribution X max = X 1 + X probability -1-3 probability = -1-3 probability X max / gcm X 1 / gcm X /gcm P Xmax (X max ) = 0 dx 1 P X1 (X 1 ) P X ( X X 1 ; HEM) method proposed by Belov et al. (HiRes) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 17 / 25

25 Independence of X-distribution from X 1 QGSJET01, protons 18 ev ( profiles): Probability 0< X 2 /gcm < 13 (n=53876) first < X /gcm first 2 39< X /gcm first 2 78< X /gcm first < 39 (n=70785) < 78 (n=52277) < 533 (n=38958) X 1 and X are independent parameters X / gcm P X ( X X 1 ) = P X ( X) (confirmed for NEXUS3, SIBYLL2.1, QGSJETII.3, QGSJET01 for protons at 18 ev and 19 ev) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 18 / 25

26 Dependence on HE model dn / d X -3 CONEX, QGSJETII, EeV QGSJETII, sibyll_0.5 factor=0.5 QGSJETII, Entries factor= QGSJETII, Mean factor= QGSJETII, RMS factor= QGSJETII, factor=0.9 QGSJETII, factor=1.0 QGSJETII, factor=1.2 QGSJETII, factor=1.4 QGSJETII, factor=1.6 QGSJETII, factor=1.8 QGSJETII, factor= X [gcm similar dependence on multiplicity expected ] P X is a function of σ and other correlated HE model parameters (multiplicity,...) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 19 / 25

27 X-distribution for different HE-models probability qgsjet sibyll -3-4 nexus qgsjetii X / gcm Position of maximum shifts up to 60gcm 2 Exponential slope after maximum changes up to a factor of 1.36 Model-dependence Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 20 / 25

28 Sensitivity of deconvolution - σ true [mb] σ rec X(QGSJET), X (QGSJET) max X(QGSJETII), X (QGSJETII) max σ modified - σ model [mb] E 0 = 19 ev Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 21 / 25

29 Sensitivity of deconvolution - σ true [mb] σ rec X(QGSJET), X (QGSJET) max X(QGSJETII), X (QGSJETII) max X(QGSJET), X (SIBYLL) max X(QGSJET), X (QGSJETII) max model uncertainty band σ modified - σ model [mb] E 0 = 19 ev Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 21 / 25

30 Summary measuring σ p air means measuring EAS fluctuations assuming CR primary interaction length the only source of EAS fluctuations is not enough. At least needed: Additional HE interaction characteristics (multiplicity,...) The first few interactions at still extreme energy diffraction Meaningful estimate of uncertainty needs: HE model dependence and CR composition x Future better understanding of fluctuations measurement of composition new experiments (fluorescence/cherenkov, muons,...) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 22 / 25

31 Summary measuring σ p air means measuring EAS fluctuations assuming CR primary interaction length the only source of EAS fluctuations is not enough. At least needed: Additional HE interaction characteristics (multiplicity,...) The first few interactions at still extreme energy diffraction Meaningful estimate of uncertainty needs: HE model dependence and CR composition x Future better understanding of fluctuations measurement of composition new experiments (fluorescence/cherenkov, muons,...) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 22 / 25

32 Summary measuring σ p air means measuring EAS fluctuations assuming CR primary interaction length the only source of EAS fluctuations is not enough. At least needed: Additional HE interaction characteristics (multiplicity,...) The first few interactions at still extreme energy diffraction Meaningful estimate of uncertainty needs: HE model dependence and CR composition x Future better understanding of fluctuations measurement of composition new experiments (fluorescence/cherenkov, muons,...) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 22 / 25

33 Final rating method HE-model composition fluctuations unaccompanied hadrons frequency attenuation X max RMS X max tail ( ) X max deconvolution Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 23 / 25

34 Final - conservative picture Cross section (proton-air) [mb] Mielke et al Nam et al Siohan et al lower limits Equivalent c.m. energy 2 3 Tevatron (p-p) [GeV] 4 QGSJET01 EPOS NEXUS3 SIBYLL2.1 QGSJETII log (Energy/eV) Energy [GeV] s pp LHC (p-p) LHC (C-C) 5 Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 24 / 25

35 Final - progressive picture Cross section (proton-air) [mb] Equivalent c.m. energy 2 3 Mielke et al Baltrusaitis et al Nam et al Siohan et al % confidence limit Tevatron (p-p) [GeV] 4 QGSJET01 EPOS NEXUS3 SIBYLL2.1 QGSJETII log (Energy/eV) Energy [GeV] s pp LHC (p-p) weak constraints on HE interaction models 5 LHC (C-C) Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 25 / 25 HE model

36 Changing composition - data ] 2 <X max > [g/cm HiRes-MIA HiRes Yakutsk 2001 Fly s Eye Yakutsk 1993 γ-ray proton iron QGSJET01 SIBYLL 2.1 DPMJET Energy [ev] Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 26 / 25

37 Composition - model by Hillas Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 27 / 25

38 Equal intensity cut intensity [arbitrary units] < log (N ) < 8.25 ch 8.25 < log (N ) < 8.5 ch 8.5 < log (N ) < 8.75 ch 8.75 < log (N ) < 9 ch sec(θ) constant intensity same primary energy (isotropic flux) relates shower size N ch at different zenith angle with primary energy Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 28 / 25

39 Equal intensity cut intensity [arbitrary units] < log (N ) < 8.25 ch 8.25 < log (N ) < 8.5 ch 8.5 < log (N ) < 8.75 ch 8.75 < log (N ) < 9 ch constant intensity sec(θ) constant intensity same primary energy (isotropic flux) relates shower size N ch at different zenith angle with primary energy Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 28 / 25

40 Equal intensity cut intensity [arbitrary units] < log (N ) < 8.25 ch 8.25 < log (N ) < 8.5 ch 8.5 < log (N ) < 8.75 ch 8.75 < log (N ) < 9 ch constant intensity sec(θ) constant intensity same primary energy (isotropic flux) relates shower size N ch at different zenith angle with primary energy Ralf Ulrich (ralf.ulrich@ik.fzk.de) On the measurement of the proton-air cross section using air shower data 28 / 25

Measurement of air shower maxima and p-air cross section with the Telescope Array

Measurement of air shower maxima and p-air cross section with the Telescope Array Measurement of air shower maxima and p-air cross section with the Telescope Array Yoshiki Tsunesada Graduate School of Science, Osaka City University May 18 2016 QCD At Cosmic Energies VII, Χαλκίδα, Greece

More information

Experimental Constraints to High Energy Hadronic Interaction Models using the Pierre Auger Observatory Part II

Experimental Constraints to High Energy Hadronic Interaction Models using the Pierre Auger Observatory Part II Experimental Constraints to High Energy Hadronic Interaction Models using the Pierre Auger Observatory Part II Tanguy Pierog Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany

More information

ULTRA-HIGH ENERGY COSMIC RAY COMPOSITION and MUON CONTENT vs. HADRONIC MODELS. Esteban Roulet Bariloche, Argentina

ULTRA-HIGH ENERGY COSMIC RAY COMPOSITION and MUON CONTENT vs. HADRONIC MODELS. Esteban Roulet Bariloche, Argentina ULTRA-HIGH ENERGY COSMIC RAY COMPOSITION and MUON CONTENT vs. HADRONIC MODELS Esteban Roulet Bariloche, Argentina Many observables are sensitive to CR composition Shower maximum TA APP 64 (2014) Auger

More information

pa at the LHC and Extensive Air Shower Development

pa at the LHC and Extensive Air Shower Development Muons in pa at the LHC and Extensive Air Shower Development Tanguy Pierog Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany Workshop on pa@lhc, ECT* Trento, Italy May the 9th

More information

Ultra-High Energy Cosmic Rays (III)

Ultra-High Energy Cosmic Rays (III) Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft Ultra-High Energy Cosmic Rays (III) Ralph Engel Forschungszentrum Karlsruhe & Karlsruhe Institute of Technology Outline Brief overview (experimental

More information

Cosmic ray studies at the Yakutsk EAS array: energy spectrum and mass composition

Cosmic ray studies at the Yakutsk EAS array: energy spectrum and mass composition Cosmic ray studies at the Yakutsk EAS array: energy spectrum and mass composition S. P. Knurenko 1 and A. Sabourov 2 1 s.p.knurenko@ikfia.ysn.ru, 2 tema@ikfia.ysn.ru Yu. G. Shafer Institute of cosmophysical

More information

On total inelastic cross-sections and the average depth of the maximum of extensive air showers

On total inelastic cross-sections and the average depth of the maximum of extensive air showers On total inelastic cross-sections and the average depth of the maximum of extensive air showers Jörg R. Hörandel University of Karlsruhe, Institut für Experimentelle Kernphysik, PO Box 364, 7621 Karlsruhe,

More information

Hadronic Interaction Models and Accelerator Data

Hadronic Interaction Models and Accelerator Data Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft Hadronic Interaction Models and Accelerator Data Ralph Engel, Dieter Heck, Sergey Ostapchenko, Tanguy Pierog, and Klaus Werner Outline Introduction:

More information

Parameters Sensitive to the Mass Composition of Cosmic Rays and Their Application at the Pierre Auger Observatory

Parameters Sensitive to the Mass Composition of Cosmic Rays and Their Application at the Pierre Auger Observatory WDS'12 Proceedings of Contributed Papers, Part III, 137 141, 2012. ISBN 978-80-7378-226-9 MATFYZPRESS Parameters Sensitive to the Mass Composition of Cosmic Rays and Their Application at the Pierre Auger

More information

Studies on UHECR composition and hadronic interactions by the Pierre Auger Observatory

Studies on UHECR composition and hadronic interactions by the Pierre Auger Observatory OBSERVATORY Studies on UHECR composition and hadronic interactions by the Pierre Auger Observatory Alexey Yushkov for the Pierre Auger Collaboration http://www.auger.org/archive/authors 7.html Universität

More information

QCD at Cosmic energies VII

QCD at Cosmic energies VII Impact of Minijet & Heavy-quark Production on the Muon Anomaly in Atmospheric Showers from Ultrahigh Energy Cosmic Rays QCD at Cosmic energies VII Chalkida, 19th May 2016 Sun Guanhao (HKUST, CERN) David

More information

Ultra-High-Energy Cosmic Rays: A Tale of Two Observatories

Ultra-High-Energy Cosmic Rays: A Tale of Two Observatories Ultra-High-Energy Cosmic Rays: A Tale of Two Observatories RuoYu Shang Nicholas Sherer Fei Sun Bryce Thurston Measurement of the Depth of Maximumof Extensive Air Showers above 10 18 ev,"phys. Rev. Letters104(2010)

More information

Hadronic Interactions and Cosmic Ray Physics

Hadronic Interactions and Cosmic Ray Physics Hadronic Interactions and Cosmic Ray Physics Tanguy Pierog Karlsruhe Institute of Technology, Institut für KernPhysik, Karlsruhe, Germany VHEPU, Quy Nhon, Vietnam August the 4th 2014 T. Pierog, KIT - 1/25

More information

Recent Results from the KASCADE-Grande Data Analysis

Recent Results from the KASCADE-Grande Data Analysis Recent Results from the KASCADE-Grande Data Analysis Donghwa Kang for the KASCADE-Grande Collaboration Karlsruhe Institute of Technology 20 th ISVHECRI 21 25 May 2018, Nagoya, Japan Status & Prospect KASCADE

More information

Latest results and perspectives of the KASCADE-Grande EAS facility

Latest results and perspectives of the KASCADE-Grande EAS facility Latest results and perspectives of the KASCADE-Grande EAS facility 29/6-2/7/2010, Nantes, France Andreas Haungs 1 Motivation KASCADE-Grande Knee EeV PeV g-eg? Radio?! KASCADE 10 15-10 17 ev: Origin of

More information

Theory of Hadronic Interactions and Its Application to Modeling of Cosmic Ray Hadronic Showers

Theory of Hadronic Interactions and Its Application to Modeling of Cosmic Ray Hadronic Showers Theory of Hadronic Interactions and Its Application to Modeling of Cosmic Ray Hadronic Showers Ralph Engel & Heinigerd Rebel Forschungszentrum Karlsruhe, Germany Outline cosmic ray flux and energies physics

More information

The KASCADE-Grande Experiment

The KASCADE-Grande Experiment The KASCADE-Grande Experiment O. Sima 1 for the KASCADE-Grande Collaboration 2 1 University of Bucharest, Romania 2 https://web.ikp.kit.edu/kascade/ CSSP14 Sinaia 2014 Overview 1. KASCADE-Grande experimental

More information

arxiv: v1 [astro-ph.he] 7 Mar 2018

arxiv: v1 [astro-ph.he] 7 Mar 2018 Extracting a less model dependent cosmic ray composition from X max distributions Simon Blaess, Jose A. Bellido, and Bruce R. Dawson Department of Physics, University of Adelaide, Adelaide, Australia arxiv:83.v

More information

The air-shower experiment KASCADE-Grande

The air-shower experiment KASCADE-Grande The air-shower experiment KASCADE-Grande Andreas Haungs KASCADE-Grande 1 Cosmic Rays around the knee(s) galactic origin of CR EeV PeV Knee 2 nd Knee? Ralph Engel, 2004 KASCADE 1995-2009 -Grande 2003-2009

More information

PoS(ICRC2017)522. Testing the agreement between the X max distributions measured by the Pierre Auger and Telescope Array Observatories

PoS(ICRC2017)522. Testing the agreement between the X max distributions measured by the Pierre Auger and Telescope Array Observatories Testing the agreement between the X max distributions measured by the Pierre Auger and Telescope Array Observatories a for the Pierre Auger Collaboration b and the Telescope Array Collaboration c a Instituto

More information

LHC data and extensive air showers

LHC data and extensive air showers EPJ Web of Conferences 52, 000 (20) DOI:.5/ epjconf/ 2052000 C Owned by the authors, published by EDP Sciences, 20 LHC data and extensive air showers Tanguy Pierog,a Karlsruhe Institute of Technology (KIT),

More information

Recent measurements of ultra-high energy cosmic rays and their impact on hadronic interaction modeling

Recent measurements of ultra-high energy cosmic rays and their impact on hadronic interaction modeling Recent measurements of ultra-high energy cosmic rays and their impact on hadronic interaction modeling Hans Dembinski KIT Karlsruhe KIT University of the State of Baden-Württemberg and National Large-scale

More information

Cosmic Ray Interaction Models: Overview

Cosmic Ray Interaction Models: Overview Cosmic Ray Interaction Models: Overview Sergey Ostapchenko Frankfurt Institute for Advanced Studies [] ISMD-2015 Wildbad Kreuth, October 4-9, 2015 Cosmic ray studies with extensive air shower techniques

More information

Mass Composition Study at the Pierre Auger Observatory

Mass Composition Study at the Pierre Auger Observatory OBSERVATORY Mass Composition Study at the Pierre Auger Observatory Laura Collica for the Auger Milano Group 4.04.2013, Astrosiesta INAF Milano 1 Outline The physics: The UHECR spectrum Extensive Air Showers

More information

Science case for recording protonoxygen collisions at the LHC

Science case for recording protonoxygen collisions at the LHC Science case for recording protonoxygen collisions at the LHC Hans Dembinski MPIK Heidelberg LHC WG Forward Physics and Diffraction 2018-03-20 KASCADE, IceCube, TUNKA Pierre Auger, Telescope Array data

More information

Hadronic Interactions and Cosmic Ray Particle Physics

Hadronic Interactions and Cosmic Ray Particle Physics Proceedings of the 30th International Cosmic Ray Conference Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, José F. Valdés-Galicia (eds.) Universidad Nacional Autonóma de México, Mexico City,

More information

High Energy Cosmic Ray Interactions

High Energy Cosmic Ray Interactions Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft High Energy Cosmic Ray Interactions (Lecture 1: Basics) Ralph Engel Karlsruhe Institute of Technology (KIT) Outline Lecture 1 Basics, low-energy

More information

Extensive Air Showers and Particle Physics Todor Stanev Bartol Research Institute Dept Physics and Astronomy University of Delaware

Extensive Air Showers and Particle Physics Todor Stanev Bartol Research Institute Dept Physics and Astronomy University of Delaware Extensive Air Showers and Particle Physics Todor Stanev Bartol Research Institute Dept Physics and Astronomy University of Delaware Extensive air showers are the cascades that develop in the atmosphere

More information

On the Combined Analysis of Muon Shower Size and Depth of Shower Maximum

On the Combined Analysis of Muon Shower Size and Depth of Shower Maximum On the Combined Analysis of Muon Shower Size and Depth of Shower Maximum, Petr Trávníček Institute of Physics of the Academy of Sciences of the Czech Republic, Na Slovance, 18 1 Prague 8 E-mail: vicha@fzu.cz

More information

Neutral particles energy spectra for 900 GeV and 7 TeV p-p collisions, measured by the LHCf experiment

Neutral particles energy spectra for 900 GeV and 7 TeV p-p collisions, measured by the LHCf experiment Neutral particles energy spectra for 900 GeV and 7 TeV p-p collisions, measured by the LHCf experiment Raffaello D Alessandro 1 Department of Physics Università di Firenze and INFN-Firenze I-50019 Sesto

More information

Status KASCADE-Grande. April 2007 Aspen workshop on cosmic ray physics Andreas Haungs 1

Status KASCADE-Grande. April 2007 Aspen workshop on cosmic ray physics Andreas Haungs 1 Status KASCADE-Grande April 2007 Aspen workshop on cosmic ray physics Andreas Haungs 1 Cosmic Rays around the knee(s) Astrophysical questions for this energy range: (1 st ) knee Knee position Composition

More information

Air Shower Measurements from PeV to EeV

Air Shower Measurements from PeV to EeV Air Shower Measurements from PeV to EeV Andreas Haungs haungs@ik.fzk.de James L. Pinfold August 2006 TeV workshop Madison, US Andreas Haungs 1 Cosmic Rays around the knee(s) EeV PeV Knee 2 nd Knee? Ralph

More information

Depth of maximum of air-shower profiles at the Pierre Auger Observatory: Measurements above ev and Composition Implications

Depth of maximum of air-shower profiles at the Pierre Auger Observatory: Measurements above ev and Composition Implications Depth of maximum of air-shower profiles at the Pierre Auger Observatory: Measurements above 10 17.2 ev and Composition Implications a for the Pierre Auger Collaboration b a The University of Adelaide,

More information

OVERVIEW OF THE RESULTS

OVERVIEW OF THE RESULTS VIIIth International Workshop on the Dark Side of the Universe, Buzios STUDY OF THE ULTRA HIGH ENERGY COSMIC RAYS WITH THE AUGER DATA OVERVIEW OF THE RESULTS H. Lyberis on behalf of the Pierre Auger Collaboration

More information

Extensive Air Shower and cosmic ray physics above ev. M. Bertaina Univ. Torino & INFN

Extensive Air Shower and cosmic ray physics above ev. M. Bertaina Univ. Torino & INFN Extensive Air Shower and cosmic ray physics above 10 17 ev M. Bertaina Univ. Torino & INFN ISMD 2015, Wildbad Kreuth 5-9 October 2015 Outline:» Part I: A general overview of cosmic ray science.» Part II:

More information

Ultra High Energy Cosmic Rays: Observations and Analysis

Ultra High Energy Cosmic Rays: Observations and Analysis Ultra High Energy Cosmic Rays: Observations and Analysis NOT A NEW PROBLEM, STILL UNSOLVED John Linsley (PRL 10 (1963) 146) reports on the detection in Vulcano Ranch of an air shower of energy above 1020

More information

arxiv: v1 [astro-ph.he] 25 Mar 2015

arxiv: v1 [astro-ph.he] 25 Mar 2015 arxiv:1503.07540v1 [astro-ph.he 5 Mar 015 Report of the Working Group on the Composition of Ultra High Energy Cosmic Rays R. Abbasi 1, J. Bellido, J. Belz 1, V. de Souza 3, W. Hanlon 1, D. Ikeda 4, J.P.

More information

Measurement of the Cosmic Ray Energy Spectrum with ARGO-YBJ

Measurement of the Cosmic Ray Energy Spectrum with ARGO-YBJ Measurement of the Cosmic Ray Energy Spectrum with ARGO-YBJ Ivan De Mitri ( on behalf of the ARGO-YBJ collaboration ) Dipartimento di Matematica e Fisica " E. De Giorgi", Universita del Salento, Lecce,

More information

Longitudinal profile of Nµ/Ne in extensive air showers: Implications for cosmic rays mass composition study

Longitudinal profile of Nµ/Ne in extensive air showers: Implications for cosmic rays mass composition study Iranian Journal of Physics Research, Vol. 13, No. 3, 2013 Longitudinal profile of Nµ/Ne in extensive air showers: Implications for cosmic rays mass composition study D Purmohammad Department of Physics,

More information

STUDY ON MASS COMPOSITION OF EXTENSIVE AIR SHOWER WITH ULTRA HIGH ENERGY COSMIC RAYS USING Q PARAMETER AND THEIR MUON COMPONENT

STUDY ON MASS COMPOSITION OF EXTENSIVE AIR SHOWER WITH ULTRA HIGH ENERGY COSMIC RAYS USING Q PARAMETER AND THEIR MUON COMPONENT U.P.B. Sci. Bull., Series A, Vol. 79, Iss. 3, 2017 ISSN 1223-7027 STUDY ON MASS COMPOSITION OF EXTENSIVE AIR SHOWER WITH ULTRA HIGH ENERGY COSMIC RAYS USING Q PARAMETER AND THEIR MUON COMPONENT Maryam

More information

arxiv: v1 [astro-ph.he] 1 Oct 2018

arxiv: v1 [astro-ph.he] 1 Oct 2018 Tests of hadronic interactions with measurements by Pierre Auger Observatory arxiv:80.00586v [astro-ph.he] Oct 08 Raul R. Prado,,3, for the Pierre Auger Collaboration 4, Deutsches Elektronen-Synchrotron

More information

Modelling MB pp,pa Collisions at the LHC and in Cosmic Rays : EPOS case

Modelling MB pp,pa Collisions at the LHC and in Cosmic Rays : EPOS case Modelling MB pp,pa Collisions at the LHC and in Cosmic Rays : EPOS case Tanguy Pierog Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany K. Werner (SUBATECH, Nantes, France),

More information

How air shower and heavy ion physics benefit from each other

How air shower and heavy ion physics benefit from each other How air shower and heavy ion physics benefit from each other K. Werner and T. Pierog 5th October 29 SUBATECH, Univ. of Nantes IN2P3/CNRS EMN, Nantes, France Forschungszentrum Karlsruhe, Inst. f. Kernphysik,

More information

Hadronic Interaction Studies with ARGO-YBJ

Hadronic Interaction Studies with ARGO-YBJ Hadronic Interaction Studies with ARGO-YBJ Ivan De Mitri University of Salento and Istituto Nazionale di Fisica Nucleare Lecce, Italy On behalf of the ARGO-YBJ Collaboration Hadron-Hadron & Cosmic Ray

More information

DIFFERENT H.E. INTERACTION MODELS

DIFFERENT H.E. INTERACTION MODELS COMPARISON OF EAS SIMULATION RESULTS USING CORSIKA CODE FOR DIFFERENT H.E. INTERACTION MODELS Dept. of Physics, Gauhati University, Assam, INDIA 15th Sep, 2010 Out line of the talk Introduction Primary

More information

Charged Cosmic Rays and Neutrinos

Charged Cosmic Rays and Neutrinos Charged Cosmic Rays and Neutrinos Michael Kachelrieß NTNU, Trondheim [] Introduction Outline of the talk 1 Introduction talk by F. Halzen 2 SNRs as Galactic CR sources 3 Extragalactic CRs transition anisotropies

More information

Ultrahigh Energy cosmic rays II

Ultrahigh Energy cosmic rays II Ultrahigh Energy cosmic rays II Today we will discuss the new data on UHECR presented during the last couple of years by the Auger observatory in Argentina. These data do not match previous analyses and

More information

ON THE WAY TO THE DETERMINATION OF THE COSMIC RAY MASS COMPOSITION BY THE PIERRE AUGER FLUORESCENCE DETECTOR: THE MINIMUM MOMENTUM METHOD

ON THE WAY TO THE DETERMINATION OF THE COSMIC RAY MASS COMPOSITION BY THE PIERRE AUGER FLUORESCENCE DETECTOR: THE MINIMUM MOMENTUM METHOD ON THE WAY TO THE DETERMINATION OF THE COSMIC RAY MASS COMPOSITION BY THE PIERRE AUGER FLUORESCENCE DETECTOR: THE MINIMUM MOMENTUM METHOD M. AMBROSIO 1,C.ARAMO 1,2, C. DONALEK 2,3,D.D URSO 4,5,A.D.ERLYKIN

More information

Search for ultra-high energy photons and neutrinos at the Pierre Auger Observatory

Search for ultra-high energy photons and neutrinos at the Pierre Auger Observatory Search for ultra-high energy photons and neutrinos at the Pierre Auger Observatory Mathieu Tartare 1 on behalf of the Pierre Auger Collaboration 2 1 Laboratoire de Physique Subatomique et de Cosmologie

More information

Benefits and prospects of using data from historic projects

Benefits and prospects of using data from historic projects KIT Meeting on Composition 21 23 September 2015 Benefits and prospects of using data from historic projects Alan Watson University of Leeds a.a.watson@leeds.ac.uk 1 The text for today s sermon Theories

More information

Measurement of the cosmic ray spectrum and chemical composition in the ev energy range

Measurement of the cosmic ray spectrum and chemical composition in the ev energy range Measurement of the cosmic ray spectrum and chemical composition in the - 18 ev energy range Andrea Chiavassa 1, 1 Dipartimento di Fisica dell Universitá degli Studi di Torino & INFN Via Pietro Giuria 1,

More information

NEW VIEWS OF THE UNIVERSE. Recent Studies of Ultra High Energy Cosmic Rays. Alan Watson University of Leeds, UK (regular KICP Visitor)

NEW VIEWS OF THE UNIVERSE. Recent Studies of Ultra High Energy Cosmic Rays. Alan Watson University of Leeds, UK (regular KICP Visitor) 1 David Schramm Symposium: NEW VIEWS OF THE UNIVERSE Recent Studies of Ultra High Energy Cosmic Rays Alan Watson University of Leeds, UK (regular KICP Visitor) a.a.watson@leeds.ac.uk 2 Dave Schramm: 15

More information

ULTRA HIGH ENERGY COSMIC RAYS WHERE DO WE STAND AFTER 10 YEARS AT THE PIERRE AUGER OBSERVATORY

ULTRA HIGH ENERGY COSMIC RAYS WHERE DO WE STAND AFTER 10 YEARS AT THE PIERRE AUGER OBSERVATORY Antoine Letessier Selvon (CNRS/UPMC) FRIF days Dourdan January 2014!1 ULTRA HIGH ENERGY COSMIC RAYS WHERE DO WE STAND AFTER YEARS AT THE PIERRE AUGER OBSERVATORY Antoine Letessier Selvon (CNRS/UPMC) FRIF

More information

The LHCf data hadronic interactions and UHECR showers. Paolo Lipari LHCf meeting Catania, 6th july 2011

The LHCf data hadronic interactions and UHECR showers. Paolo Lipari LHCf meeting Catania, 6th july 2011 The LHCf data hadronic interactions and UHECR showers Paolo Lipari LHCf meeting Catania, 6th july 2011 ~50 years of UHECR Problems of determination of: Energy Mass A Hadronic interaction Modeling Measure

More information

PoS(ICRC2015)424. YAC sensitivity for measuring the light-component spectrum of primary cosmic rays at the knee energies

PoS(ICRC2015)424. YAC sensitivity for measuring the light-component spectrum of primary cosmic rays at the knee energies YAC sensitivity for measuring the light-component spectrum of primary cosmic rays at the knee energies L. M. Zhai a,b, J. Huang a, D. Chen b, M. Shibata c, Y. Katayose c, Ying Zhang a, Xu Chen a, X. B.

More information

UHECR and HADRONIC INTERACTIONS. Paolo Lipari Searching for the origin of Cosmic Rays Trondheim 18th June 2009

UHECR and HADRONIC INTERACTIONS. Paolo Lipari Searching for the origin of Cosmic Rays Trondheim 18th June 2009 UHECR and HADRONIC INTERACTIONS Paolo Lipari Searching for the origin of Cosmic Rays Trondheim 18th June 2009 ~60 years of UHECR Energy Hadronic interaction Modeling Mass A Energy measurement problem solved.

More information

The average longitudinal air shower profile: exploring the shape information

The average longitudinal air shower profile: exploring the shape information Journal of Physics: Conference Series PAPER OPEN ACCESS The average longitudinal air shower profile: exploring the shape information Related content - The rapid atmospheric monitoring system of the Pierre

More information

The Pierre Auger Observatory

The Pierre Auger Observatory The Pierre Auger Observatory Hunting the Highest Energy Cosmic Rays I High Energy Cosmic Rays and Extensive Air Showers March 2007 E.Menichetti - Villa Gualino, March 2007 1 Discovery of Cosmic Rays Altitude

More information

Measurement of the cosmic ray all-particle and light-component energy spectra with the ARGO- YBJ experiment

Measurement of the cosmic ray all-particle and light-component energy spectra with the ARGO- YBJ experiment Journal of Physics: Conference Series PAPER OPEN ACCESS Measurement of the cosmic ray all-particle and light-component energy spectra with the ARGO- YBJ experiment To cite this article: Ivan De Mitri and

More information

Zero degree neutron energy spectra measured by LHCf at s = 13 TeV proton-proton collision

Zero degree neutron energy spectra measured by LHCf at s = 13 TeV proton-proton collision Zero degree neutron energy spectra measured by LHCf at s = TeV proton-proton collision Nagoya university, ISEE E-mail: ueno.mana@isee.nagoya-u.ac.jp The Large Hadron Collider forward (LHCf) experiment

More information

A CORSIKA study on the influence of muon detector thresholds on the separability of primary cosmic rays at highest energies

A CORSIKA study on the influence of muon detector thresholds on the separability of primary cosmic rays at highest energies A CORSIKA study on the influence of muon detector thresholds on the separability of primary cosmic rays at highest energies and Markus Roth Institut für Kernphysik, Karlsruhe Institute of Technology (KIT),

More information

Journal of Asian Scientific Research STEEPNESS OF THE LATERAL DISTRIBUTION FUNCTION OF SECONDARY HADRONS IN EXTENSIVE AIR SHOWERS. M.

Journal of Asian Scientific Research STEEPNESS OF THE LATERAL DISTRIBUTION FUNCTION OF SECONDARY HADRONS IN EXTENSIVE AIR SHOWERS. M. Journal of Asian Scientific Research journal homepage: http://www.aessweb.com/journals/5003 STEEPNESS OF THE LATERAL DISTRIBUTION FUNCTION OF SECONDARY HADRONS IN EXTENSIVE AIR SHOWERS M. Roshan Nasab

More information

Cosmic Ray Physics with ARGO-YBJ

Cosmic Ray Physics with ARGO-YBJ Cosmic Ray Physics with ARGO-YBJ Ivan De Mitri University of Salento and Istituto Nazionale di Fisica Nucleare Lecce, Italy On behalf of the ARGO-YBJ Collaboration 4th Workshop on Air Shower Detection

More information

Constraints on the energy spectra of charged particles predicted in some model interactions of hadrons with help of the atmospheric muon flux

Constraints on the energy spectra of charged particles predicted in some model interactions of hadrons with help of the atmospheric muon flux Constraints on the energy spectra of charged particles predicted in some model interactions of hadrons with help of the atmospheric muon flux L G Dedenko 1,2, G F Fedorova 1, T M Roganova 1 1 Skobeltsyn

More information

Recent CMS results in the forward region with the CASTOR detector. Sebastian Baur for the CMS Collaboration

Recent CMS results in the forward region with the CASTOR detector. Sebastian Baur for the CMS Collaboration Recent CMS results in the forward region with the CASTOR detector Sebastian Baur for the CMS Collaboration The Forward Instrumentation of CMS 2 Overview CMS has an excellent calorimetric instrumentation

More information

Diffraction Physics at LHCb

Diffraction Physics at LHCb Diffraction Physics at LHCb Michael Schmelling LHCb / MPI for Nuclear Physics The LHCb Experiment Energy Flow Central Exclusive Production New Developments Summary Diffraction Physis at LHCb M. Schmelling,

More information

Muon measurements and hadronic interactions at the Pierre Auger Observatory

Muon measurements and hadronic interactions at the Pierre Auger Observatory Muon measurements and hadronic interactions at the Pierre Auger Observatory Raul Sarmento for the Pierre Auger Collaboration raul@lip.pt Rencontres de Moriond - VEHPU, La Thuile, 22 nd March 2017 Pierre

More information

Extrapolation of nucleus-nucleus cross section to cosmic ray energies using geometrical model

Extrapolation of nucleus-nucleus cross section to cosmic ray energies using geometrical model Extrapolation of nucleus-nucleus cross section to cosmic ray energies using geometrical model a, T. Wibig a,b a National Centre for Nuclear Research, Astrophysics Division, Cosmic Ray Laboratory, ul. 8

More information

arxiv:astro-ph/ v1 10 Dec 1999

arxiv:astro-ph/ v1 10 Dec 1999 Comparison of AGASA data with CORSIKA simulation M. Nagano a, D. Heck b K. Shinozaki c N. Inoue c J. Knapp d arxiv:astro-ph/992222v 0 Dec 999 a Department of Applied Physics and Chemistry, Fukui University

More information

arxiv:astro-ph/ v1 3 Mar 2003

arxiv:astro-ph/ v1 3 Mar 2003 Measurements of Attenuation and Absorption Lengths with the KASCADE Experiment arxiv:astro-ph/0303036v1 3 Mar 2003 T. Antoni a, W. D. Apel b, A.F. Badea a,1, K. Bekk b, A. Bercuci b,1, H. Blümer b,a, H.

More information

P. Tinyakov 1,2 TELESCOPE ARRAY: LATEST RESULTS. P. Tinyakov. for the Telescope Array Collaboration. Telescope Array detector.

P. Tinyakov 1,2 TELESCOPE ARRAY: LATEST RESULTS. P. Tinyakov. for the Telescope Array Collaboration. Telescope Array detector. 1,2 1 Université Libre de Bruxelles, Bruxelles, Belgium 2 Institute for Nuclear Research, Moscow, Russia Telescope Outline Telescope Telescope UHECR ground-based experiments Telescope ARRAY DETECTOR Telescope

More information

arxiv: v1 [astro-ph.he] 8 Apr 2015

arxiv: v1 [astro-ph.he] 8 Apr 2015 Physics Procedia 00 (2015) 1 Physics Procedia www.elsevier.com/locate/procedia 13th International Conference on Topics in Astroparticle and Underground Physics Cosmic Rays from the Knee to the Ankle arxiv:1504.01859v1

More information

Numerical study of the electron lateral distribution in atmospheric showers of high energy cosmic rays

Numerical study of the electron lateral distribution in atmospheric showers of high energy cosmic rays American Journal of Modern Physics 2013; 2(6): 287-291 Published online October 20, 2013 (http://www.sciencepublishinggroup.com/j/ajmp) doi: 10.11648/j.ajmp.20130206.13 Numerical study of the electron

More information

Ultra High Energy Cosmic Rays What we have learnt from. HiRes and Auger. Andreas Zech Observatoire de Paris (Meudon) / LUTh

Ultra High Energy Cosmic Rays What we have learnt from. HiRes and Auger. Andreas Zech Observatoire de Paris (Meudon) / LUTh Ultra High Energy Cosmic Rays What we have learnt from HiRes and Auger Andreas Zech Observatoire de Paris (Meudon) / LUTh École de Chalonge, Paris, Outline The physics of Ultra-High Energy Cosmic Rays

More information

CORSIKA modification for electric field simulations on pions, kaons and muons

CORSIKA modification for electric field simulations on pions, kaons and muons on pions, kaons and muons ab, S.R. Dugad ab, S.K. Gupta ab, Y. Hayashi ac, P. Jagadeesan ab, A. Jain ab, S. Kawakami ac, P.K. Mohanty ab, B.S. Rao ab a The GRAPES-3 Experiment, Cosmic Ray Laboratory, Raj

More information

First Results from the Pierre Auger Project

First Results from the Pierre Auger Project First Results from the Pierre Auger Project A new cosmic ray observatory designed for a high statistics study of the the Highest Energy Cosmic Rays. Jim Beatty (Ohio State) for the Pierre Auger Collaboration

More information

The Most Energetic Particles in Nature

The Most Energetic Particles in Nature ASIAA/CCMS/IAMS/LeCosPA/NTU-Phys Joint Colloquium, April 7, 2015 The Most Energetic Particles in Nature Karl-Heinz Kampert University of Wuppertal Area Grant Karl-Heinz Kampert Taipei Colloq, 7.04.2015

More information

Total pp cross section measurements at 2, 7, 8 and 57 TeV

Total pp cross section measurements at 2, 7, 8 and 57 TeV Total pp cross section measurements at 2, 7, 8 and 57 TeV A) One (out of several) theoretical framework B) Topologies of events in σ tot C) Direct measurement of σ inel : 1) cosmic-ray experiments 2) collider

More information

Studies of Ultra High Energy Cosmic Rays with the Pierre Auger Observatory

Studies of Ultra High Energy Cosmic Rays with the Pierre Auger Observatory Studies of Ultra High Energy Cosmic Rays with the Pierre Auger Observatory Universidade Federal do Rio de Janeiro, Brazil E-mail: haris@if.ufrj.br Aquiring data continuously from 004, the Pierre Auger

More information

Primary cosmic ray mass composition above 1 PeV as measured by the PRISMA-YBJ array

Primary cosmic ray mass composition above 1 PeV as measured by the PRISMA-YBJ array as measured by the PRISMA-YBJ array Stenkin Yu.V. 1, 2, Alekseenko V.V. 1, Cui S.W. 4, He Ya.Yu. 4, Li B.B. 4, Ma X.H. 3, Shchegolev O.B. 1, Stepanov V.I. 1, Yanin Ya. 1,2, Zhao J. 3 1 - Institute for

More information

and small-x QCD Adrian Dumitru, ITP, Frankfurt University, 2005 CTEQ summer school Collaborators: H.J. Drescher and M. Strikman

and small-x QCD Adrian Dumitru, ITP, Frankfurt University, 2005 CTEQ summer school Collaborators: H.J. Drescher and M. Strikman Cosmic Ray Airshowers and small-x QCD Adrian Dumitru, ITP, Frankfurt University, 2005 CTEQ summer school Collaborators: H.J. Drescher and M. Strikman Cosmic Rays Airshowers QCD input, small x, high gluon

More information

Looking Beyond the Standard Model with Energetic Cosmic Particles

Looking Beyond the Standard Model with Energetic Cosmic Particles Looking Beyond the Standard Model with Energetic Cosmic Particles Andreas Ringwald http://www.desy.de/ ringwald DESY Seminar Universität Dortmund June 13, 2006, Dortmund, Germany 1. Introduction Looking

More information

Cosmic Ray Physics with the ARGO-YBJ experiment

Cosmic Ray Physics with the ARGO-YBJ experiment Cosmic Ray Physics with the ARGO-YBJ experiment Ivan De Mitri University of Salento and Istituto Nazionale di Fisica Nucleare Lecce, Italy On behalf of the ARGO-YBJ Collaboration Second Roma International

More information

Some Thoughts on Laboratory Astrophysics for UHE Cosmic Rays. Pierre Sokolsky University of Utah SABRE Workshop SLAC, March, 2006

Some Thoughts on Laboratory Astrophysics for UHE Cosmic Rays. Pierre Sokolsky University of Utah SABRE Workshop SLAC, March, 2006 Some Thoughts on Laboratory Astrophysics for UHE Cosmic Rays Pierre Sokolsky University of Utah SABRE Workshop SLAC, March, 2006 UHE Cosmic Ray detection (N, gamma, neutrino) Indirect - Extensive Air Shower

More information

arxiv: v2 [astro-ph.im] 24 Nov 2009

arxiv: v2 [astro-ph.im] 24 Nov 2009 arxiv:99.414v2 [astro-ph.im] 24 Nov 29 A Parametrization of Cosmic Ray Shower Profiles Based on Shower idth J.A.J. Matthews, R. Mesler, B. R. Becker, M. S. Gold, J. D. Hague University of New Mexico, Department

More information

Cosmic Ray Physics with ARGO-YBJ

Cosmic Ray Physics with ARGO-YBJ Cosmic Ray Physics with ARGO-YBJ Ivan De Mitri University of Salento and Istituto Nazionale di Fisica Nucleare Lecce, Italy On behalf of the ARGO-YBJ Collaboration RICAP-13 Roma International Conference

More information

Recent results on UHECRs from the Pierre Auger Observatory. Olivier Deligny (IPN Orsay), on behalf the Pierre Auger Collaboration

Recent results on UHECRs from the Pierre Auger Observatory. Olivier Deligny (IPN Orsay), on behalf the Pierre Auger Collaboration Recent results on UHECRs from the Pierre Auger Observatory Olivier Deligny (IPN Orsay), on behalf the Pierre Auger Collaboration LHAASO Workshop, Beijing, Feb. 2011 1 UHE Detectors 2 With time, gain not

More information

Review of accelerator data of relevance to air shower simulations

Review of accelerator data of relevance to air shower simulations Y.Itow, Review of Accelerator data UHECR2012@ 14Feb2012 Review of accelerator data of relevance to air shower simulations Yoshitaka Itow STE Lab / Kobayashi-Maskawa Inst. Nagoya University UHECR 2012 Feb

More information

Elastic and inelastic cross section measurements with the ATLAS detector

Elastic and inelastic cross section measurements with the ATLAS detector Elastic and inelastic cross section measurements with the ATLAS detector Simon Holm Stark Niels Bohr Institute University of Copenhagen MPI@LHC 2017 December 13, 2017, Shimla, India Outline: Physics motivation.

More information

Cosmic Ray Physics with the IceTop Air Shower Array. Hermann Kolanoski Humboldt-Universität zu Berlin

Cosmic Ray Physics with the IceTop Air Shower Array. Hermann Kolanoski Humboldt-Universität zu Berlin Cosmic Ray Physics with the IceTop Air Shower Array Hermann Kolanoski Humboldt-Universität zu Berlin SNOWPAC - March 22-28, 2010 Hermann Kolanoski: IceTop Air Shower Array Outline Cosmic rays: what IceCube/IceTop

More information

Results from the Telescope Array Experiment

Results from the Telescope Array Experiment Results from the Telescope Array Experiment Hiroyuki Sagawa (ICRR, University of Tokyo) for the Telescope Array Collaboration @ AlbaNova University Center on 2011.08.1 2011/08/1 H. Sagawa @ 7th TeVPA in

More information

Probing QCD approach to thermal equilibrium with ultrahigh energy cosmic rays

Probing QCD approach to thermal equilibrium with ultrahigh energy cosmic rays Probing QCD approach to thermal equilibrium with ultrahigh energy cosmic rays Department of Physics&Astronomy, Lehman College, CUNY, NY 10468, USA Department of Physics, Graduate Center, City University

More information

A. Lindner 1. University of Hamburg, II. Inst. für Exp. Physik, Luruper Chaussee 149, D Hamburg, Germany

A. Lindner 1. University of Hamburg, II. Inst. für Exp. Physik, Luruper Chaussee 149, D Hamburg, Germany Astroparticle Physics 8 (1998) 2351252 A new method to reconstruct the energy and determine the composition of cosmic rays from the measurement of Cherenkov light and particle densities in extensive air

More information

The cosmic ray energy spectrum measured using the Pierre Auger Observatory

The cosmic ray energy spectrum measured using the Pierre Auger Observatory The cosmic ray energy spectrum measured using the Pierre Auger Observatory ab for the Pierre Auger Collaboration c a Università degli studi di Torino, Via Pietro Giuria 1, 10152 Torino, Italy b INFN Torino,

More information

Measurements of the total and inelastic pp cross section with the ATLAS detector at 8 and 13 TeV

Measurements of the total and inelastic pp cross section with the ATLAS detector at 8 and 13 TeV Measurements of the total and inelastic pp cross section with the ATLAS detector at 8 and 13 TeV Motivation Measurements of the total and inelastic cross sections and their energy evolution probe the non-perturbative

More information

Cosmic Rays, their Energy Spectrum and Origin

Cosmic Rays, their Energy Spectrum and Origin Chapter 1 Cosmic Rays, their Energy Spectrum and Origin 1 The Problem of Cosmic Rays Most cosmic rays are not, as the name would suggest, a type of electromagnetic radiation, but are nucleonic particles

More information

Recent results from the LHCf experiment

Recent results from the LHCf experiment Recent results from the LHCf experiment Gaku Mitsuka (Nagoya University) on behalf of the LHCf Collaboration ISMD 6- September, Jan Kochanowski University, Kielce Outline Keywords: (Ultra high energy)

More information

THE PIERRE AUGER OBSERVATORY: COSMIC ACCELERATORS AND THE MOST ENERGETIC PARTICLES IN THE UNIVERSE

THE PIERRE AUGER OBSERVATORY: COSMIC ACCELERATORS AND THE MOST ENERGETIC PARTICLES IN THE UNIVERSE Proceedings of IPAC, Kyoto, Japan FRYMH3 THE PIERRE AUGER OBSERVATORY: COSMIC ACCELERATORS AND THE MOST ENERGETIC PARTICLES IN THE UNIVERSE J. Blümer, Karlsruhe Institute of Technology, Karlsruhe, Germany

More information

STATUS OF ULTRA HIGH ENERGY COSMIC RAYS

STATUS OF ULTRA HIGH ENERGY COSMIC RAYS STATUS OF ULTRA HIGH ENERGY COSMIC RAYS Esteban Roulet (Bariloche) COSMO / CosPA 2010, Tokyo Power law flux stochastic (Fermi) acceleration in shocks cosmic ray flux Small fractional energy gain after

More information

From the Knee to the toes: The challenge of cosmic-ray composition

From the Knee to the toes: The challenge of cosmic-ray composition New Views of the Universe December 8 th 13 th, 2005, Chicago From the Knee to the toes: The challenge of cosmic-ray composition Jörg R. Hörandel University of Karlsruhe www-ik.fzk.de/~joerg New Views of

More information