Theory of Hadronic Interactions and Its Application to Modeling of Cosmic Ray Hadronic Showers
|
|
- Deirdre Hardy
- 6 years ago
- Views:
Transcription
1 Theory of Hadronic Interactions and Its Application to Modeling of Cosmic Ray Hadronic Showers Ralph Engel & Heinigerd Rebel Forschungszentrum Karlsruhe, Germany
2 Outline cosmic ray flux and energies physics of air showers physics of air showers and their characteristics basic methods for measuring energy and composition hadronic interaction models pomeron interpretation, minijets and parton densities unitarization and cross sections leading particle production generalization to nuclear projectiles and targets predictions for LHC (central and forward) constraints from cosmic ray data
3 Local interstellar cosmic ray flux all energies refer to total particle energy measured flux extends to E lab ev highest energy particles extremely rare still unexplained: sources, knee, ankle... existence of GZK cutoff at E ev? hypothetical sources: below ankle: galactic above ankle: extra-gal. particle flux dn/dln(e) (cm -2 sr -1 s -1 ) direct measurements 1 (m 2 sr hr) -1 1 (km 2 sr min) -1 1 (km 2 sr day) -1 1 (km 2 sr century) particle energy E JACEE AGASA Akeno CASA-BLANCA CASA-MIA DICE Fly s Eye (mono) Fly s Eye (stereo) Grigorov Haverah Park HEGRA KASCADE MSU Tibet Tien Shan Yakutsk air shower measurements (ev / particle)
4 Hypothetical sources of high-energy cosmic rays Crab Nebula (SNR) and M87 (AGN)
5 Cosmic ray flux: energy comparison power-law spectra low-energy index: -2.7 high-energy index: -3.1 particle type low energy: mainly H... Fe ions high energy: unknown measured flux extends to spp 400 TeV knee coincides with Tevatron energy ankle above LHC energy scaled particle flux E 2.7 dn/de (cm -2 sr -1 s -1 GeV 1.7 ) fixed target s pp (GeV) HERA RHIC TEVATRON AGASA Akeno CASA-BLANCA CASA-MIA DICE Fly s Eye (mono) Fly s Eye (stereo) Grigorov Haverah Park HEGRA JACEE KASCADE MSU Tibet Tien Shan Yakutsk LHC E (ev / particle)
6 Introduction to extensive air showers
7 Simulation of extensive air showers particle production (hadronic, electroweak) propagation, decay energy loss and deflection in geomag. field public MC codes: CORSIKA (Heck et al.) AIRES (Sciutto et al.) SENECA (Drescher et al.) h (km) γ p Fe problematic: simulation and extrapolation of hadronic multiparticle production x (km)
8 Characterization of extensive air showers shower size N e X 0 12 km X max α ln(e 0 /A) N e(max) α E 0 secondaries mainly e ±, γ π 0 s transfer energy to em. component 6 km slant depth (g/cm 2 ) sea level vertical shower sea level zenith angle of 30 deg. mean particle energy at maximum 0.6 GeV % of primary energy converted to ionization energy
9 Model-dependence: energy/composition via shower profile simulation of shower profile: mean depth of shower maximum: particle multiplicity N e 3.5 x x x x x x x E = 3.2 x ev SIBYLL 2.1 Fly s Eye event proton iron gamma (mag.) <X max > (g/cm 2 ) CACTI CASA-BLANCA DICE Fly s Eye Haverah Park HEGRA HiRes-MIA SPASE-VULCAN Yakutsk SIBYLL 2.1 QGSjet01 p Fe 0.0 x atmospheric depth X (g/cm 2 ) 400 strong dependence on hadronic interaction model primary energy E (ev)
10 Model-dependence: energy/composition via N e -N µ superposition model: proton of energy E muon number DPMJET 2.55 nexus 2 QGSJET 01 SIBYLL 2.1 Fe ev Fe ev p Fe ev p N µ E 0.89 N e E ln E 10 4 Fe ev p nucleus of energy E and mass number A N µ A(E/A) 0.89 N e E ln(e/a) 10 3 p electron number (D. Heck, ICRC 2001)
11 300 VENUS 200 Models: 100 charged particle multiplicity in p-n collisions 1997 N ch DPMJET 2.5 nexus 2 QGSJET 01 SIBYLL model predictions by more than factor 2 at high energy Average charged particle multiplicity as function of energy for p- N collisions. similar differences for π-n collisions mean muon multiplicities of showers differ only by 20% E lab (ev) (D.Heck, ICRC 2001) D. Heck heck@ik3.fzk.de 27 ICRC, Hamburg, August
12 Muon production: Heitler s model E only charged secondaries initiate new cascades E/n tot n tot = n ch+ n neut decay if critical energy E c is reached E c = E/(n tot ) N 2 E/(n ) tot E/(n ) N tot ( n ch ) 2 (n ch ) N charged particles decay producing one muon N µ = (n ch ) N eliminating N gives ( ) α E N µ = E c α = ln n ch ln n tot showers have reduced sensitivity to high energy interactions
13 Requirements on hadronic interaction models physics requirements: simulation of p, π, K,... collisions with air nuclei coverage of full energy range from production threshold to s 400 TeV minimum bias event simulation tuned to give optimal description of energetic secondary particles technical requirements: variable projectile/target combinations variable energy simulation fast simulation code
14 Cosmic ray hadronic interaction models high-energy models: DPMJET II.5 and III (Ranft / Roesler, RE & Ranft) nexus 2.0 and 3.0 (Drescher, Hladik, Ostapchenko, Pierog & Werner) QGSjet 98 and 01 (Kalmykov & Ostapchenko) SIBYLL 1.7 and 2.1 (Engel / RE, Fletcher, Gaisser, Lipari & Stanev) all QCD-inspired models (minijets) low-energy models: GHEISHA/GEANT (Fesefeldt) Hillas splitting algorithm (Hillas) FLUKA (Fasso, Ferrari, Ranft, Sala) UrQMD (Bass, Bleicher et al.) TARGET (RE, Gaisser, Protheroe & Stanev) HADRIN/NUCRIN (Hänßgen & Ranft) mostly parametrizations of data
15 What about PYTHIA, HIJING,...? most HEP models not designed for leading particle production other models lack completeness example: HIJING predictions and bubble chamber data (Pop, Gyulassy & Rebel: Astropart. Phys. 10 (1999) 211)
16 Partonic view: structure of QCD inspired models model for nucleon-nucleon interaction central particle production (soft interactions, minijet production) projectile leading particle production (projectile remnant, diffraction dissociation) generalization to hadron-nucleus and nucleus-nucleus interactions fragmentation and hadronization target intranuclear cascade, etc.
17 Nucleon-nucleon scattering: pomeron description color dipole scattering, exchange of vacuum quantum numbers: pomeron q q qq q q > q qq q two-gluon scattering in QCD-improved parton model: ~ > unitarity cut
18 Perturbative QCD: hard part of the pomeron conventional phenomenology: two-gluon scattering and collinear factorization projectile f(x,q ) 1 2 inclusive jet-pair cross section: σ jet 1 = f d 2 A (x 1, Q 2 ) f B (x 2, Q 2 ) dˆσ i,j k,l p 1 + δ kl d 2 p i,j,k,l parton density evolution (DGLAP): df(x, Q 2 ) dlogq 2 = α s(q 2 ) 2π P (x/y) f(y, Q2 ) factorization: parton densities are universal jet pair target nucleus (air) f(x,q 2 2 )
19 Minijet cross section: energy and cutoff dependence QCD expectation: f(x, Q 2 ) 1/x total cross section: DL fit GRV 98 SIBYLL 2.1 EHLQ set 1, p t > 2 GeV log 10 ( E lab / ev ) σ jet s ln s old extrapolations: σ hard (mb) 1000 p t cutoff = 2 GeV 100 HERA measurements: (GeV) E cm p t cutoff = 4 GeV inclusive cross section exceeds total cross section: many minijet pairs produced per p-p collision σ jet = n jet σ inel
20 Reliability of minijet phenomenology kinematics: x 1 x 2 4p 2 /s parton densities measured in limited x, Q 2 range x values cutoff p T cutoff = 2 GeV p T cutoff = 4 GeV p T = 8 GeV log 10 ( E lab / ev ) (x 1 = x 2 ) higher order corrections (k-factor) parton density saturation effects (x 1 = 1) E cm (GeV)
21 Model implementations of hard scattering QGSjet: pre-hera parton densities, no saturation DPMJET III: energy-dependent transverse momentum cutoff (summation of lowest-order enhanced diagrams, string fusion) p cutoff ( ( s s) = p GeV log 10 50GeV ) 3 SIBYLL: energy-dependent transverse momentum cutoff p cutoff ( s) = p 0 { GeV exp } ln(s) numerically similar to Golec-Biernat & Wüsthoff model ( ) λ ( ) λ/2 x s Q 2 s (x) = Q2 0 Q 2 0 λ x 0 s 0
22 Unitarization: eikonal approximation standard in literature: two-component eikonal models σ inel = d 2 b (1 exp { 2χs 2χ h }) χ s/h (s, b) = σ s/h A(s, b) with d 2 b A(s, b) = 1 profile function A(s, b) ( p t) ( B) ~ 1 R o R ~ log(s) low energy high energy
23 Cross section fits: model parameters p t cutoff = 2.5 GeV 3.5 GeV log 10 ( E lab / ev ) R 0 2 = 3.5 GeV E735 data p t cutoff = 2.5 GeV R 0 2 = 1.5 GeV -2 σ (mb) σ tot R 0 2 = 1.5 GeV -2 dp nch /dn ch p t cutoff = 3.5 GeV R 0 2 = 3.5 GeV -2 0 σ ela s (GeV) n ch reasonable cross section fits possible for many parameter combinations correlation between eikonal function and multiplicity distribution
24 Resummation according to unitarity cuts (AGK) analytical resummation possible for eikonal-type models cross section for n cut pomerons (i.e. n partonic interactions) σ (n) inel = d 2 (2χ) n b e 2χ n! P nch UA5 data DPMJET III 1 cut Pomeron 2 cut Pomerons 3 cut Pomerons 4 cut Pomerons 5 cut Pomerons inelastic cross section σ inel = n=1 σ (n) ine n ch
25 Interpretation of the eikonal approximation unitarized amplitude a(s, b) = i 2 ( ) 1 e χ(s, b) χ(s, b) 1 2! [ χ(s, b) ] ! [ χ(s, b) ] 3... problem: energy-momentum sharing not considered at amplitude level nexus: explicit calculation with energy-momentum conservation
26 Partonic view: structure of QCD inspired models model for nucleon-nucleon interaction central particle production (soft interactions, minijet production) projectile leading particle production (projectile remnant, diffraction dissociation) generalization to hadron-nucleus and nucleus-nucleus interactions fragmentation and hadronization target intranuclear cascade, etc.
27 Leading particle production: models DPMJET, QGSjet: leading particle distributions determined by pomeron/reggeon parameters (Mueller diagrams) f DPM nuc (x) x 1/2 q (1 x q ) 3/2, f DPM mes (x) x 1/2 q (1 x q ) 1/2 nexus, SIBYLL: fits to data f SIB nuc (x) (x2 q + µ2 /s) 1/4 (1 x q ) 3 distributions assumed to be energy-independent energy-momentum conservation influences distributions
28 Leading particle production: data fixed target experiments: dσ/dx lab (mb) E lab ev Brenner et al. 100 GeV Brenner et al. 175 GeV Aguilar-Benitez et al. 400 GeV SIBYLL 2.1 QGSjet DPMJET II.5 HERA collider: sγp 200 GeV, E lab ev dn/dx lab 10 1 ZEUS, high Q 2 ZEUS, low Q 2 SIBYLL 2.1 QGSjet DPMJET II x lab = E p /E beam x lab different parametrizations work well at low energy, however substantial differences in extrapolation
29 Gribov-Glauber approximation geometric picture: projectile b target (and its fluctuations) interact coherently with several nucleons σ inel = σ prod d 2 b [1 A k=1 d 2 b [1 exp ( 1 σ NN tot T N( b s k )) ] { σine NN T A( }] b) d 2 b [1 exp { σtot NN T A( }] b) known not to be a good approximation for central collisions first investigations of string fusion by Santiago group and Ranft show small impact on shower predictions
30 Current status of predictions: proton-air cross sections (mb) p-air σ inel Mielke et al. Yodh et al. Baltrusaitis et al. Honda et al. Aglietta et al. rescaled by Block et al DPMJET II.5 nexus 2 QGSJET01 SIBYLL 2.1 Block et al. (D. Heck) E lab (ev) difference QGSjet - SIBYLL: profile function A(s, b) difference nexus - QGSjet: pre- and post-hera parton densities
31 Current status of predictions: multiplicity distributions charged particle multiplicity distribution p- p collisions: s = 1800 GeV, E lab ev dp nch /dn ch E735 data SIBYLL 2.1 QGSjet 99 DPMJET III data became available only recently (no model tuning) crucial test of consistency of model parameters and cross sections n ch
32 Current status of predictions: leading particle distributions 10 E lab = ev s = 43 GeV SIBYLL 2.1 QGSjet 98 DPMJET 2.5 dn/dx lab 1 leading hadron distribution in p-air collisions model predictions similar at low energy significant divergence at high energy extremely inelastic collisions related to high multiplicity events popcorn-type effect dn/dx lab dn/dx lab E lab = ev s = 43 TeV E lab = ev s = 433 TeV SIBYLL 2.1 QGSjet 98 DPMJET 2.5 SIBYLL 2.1 QGSjet 98 DPMJET x lab
33 Model tuning: important phase space regions de T /dη (GeV) de/dη (GeV) CMS/TOTEM/Castor CDF, D0 s = 200 GeV s = 1800 GeV s = 14 TeV HEP: high-p jets and secondaries transverse energy leptonic secondaries air shower physics: total/inelastic cross section fraction of diff. dissociation energy flow particle multiplicity distribution hadronic secondaries pseudorapidity η
34 Model predictions: proton-proton at LHC transverse energy distribution de t /dη (GeV) transverse energy pseudorapidity η QGSjet01 SIBYLL 2.1 DPMJET 3 nexus 3 energy distribution de/dη (GeV) total energy QGSjet01 SIBYLL 2.1 DPMJET 3 nexus pseudorapidity η
35 Model predictions: central vs. forward region particle distribution dn all /dη QGSjet01 SIBYLL 2.1 DPMJET 3 nexus 3 particle distribution dn/dx F 10 1 QGSjet01 SIBYLL 2.1 DPMJET 3 nexus pseudorapidity η particle multiplicity Feynman-x particle multiplicity x F
36 Constraints from cosmic ray data difficulties with cosmic ray beams: no direct measurement of interactions possible selection of showers of fixed energy selection of showers of desired primary possible methods to constrain models: comparison of shower measurements to simulated showers assuming an energy spectrum and primary composition consistency checks within limits given by possible composition multiparameter measurements: check of parameter correlation model-independent limits on interaction characteristics impossible
37 Example: upper cross section bound? σ (mb) pp/ pp data low p t cut high p t cut log 10 ( E lab / ev ) σ tot <X max > (g/cm 2 ) CACTI CASA-BLANCA DICE Fly s Eye Haverah Park HEGRA HiRes-MIA SPASE-VULCAN Yakutsk low p t cutoff high p t cutoff p Fe 50 σ ela s pp (GeV) primary energy E (ev) realistic model with steep cross section extrapolation (RE, ICHEP 2002) comparison of prediction with measurement (assumption: no photon primaries) shown example (based on CDF-like extrapolation) consistent with data exclusion of extreme cross section rise possible (but caveats)
38 Summary & conclusions cosmic rays and their interactions: interesting field of physics, many open questions measurements rely on detailed simulations hadron-nucleon interactions: models with high degree of self-consistency considerable uncertainty in extrapolation and reliability of minijet cross section no good theory of leading particle production hadron- and nucleus-nucleus interaction: need to understand RHIC data current phenomenology relies on forward hadron production data predictions for LHC central and forward particle production not directly correlated need measurements of central and forward region model-independent limits difficult to derive from cosmic ray data
39 Acknowledgments The authors thank all colleagues and friends who have contributed to this talk in various ways (discussions, plots, etc.): D. Heck, J. Alvarez-Muñiz, T.K. Gaisser, A. Haungs, S. Ostapchenko, J. Ranft, S. Roesler, and T. Stanev
40 Unitarity and optical theorem total cross section: σ tot = 1 Φ dp X M pp X 2 2 = = 1 dp X M pp X M + pp X Φ phase space integration d 3 k 2E = δ(k2 m 2 )d 4 k ( ) 1 Im d 4 k k 2 m 2 + iɛ results in particle propagators = Im = unitarity cut optical theorem: 1 s Im A pp pp(s, t = 0) = 1 Φ dp X M pp X 2 = σ tot
41 Topological expansion of QCD limit N c, N c /n f = const., g 2 N 2 c 1 example: ( t Hooft, Veneziano, Witten) planar graph (reggeon): q q q q > q qq unitarity cut q qq
42 Enhanced pomeron diagrams method of calculating gluon-gluon fusion different unitarity cuts possible: hard diffraction example: triple-pomeron graph 2 > resummation to all orders very difficult due to cancellations
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 informationHadronic 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 informationULTRA-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 informationOn the measurement of the proton-air cross section using air shower data
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 Introduction Analysis methods
More informationCosmic 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 informationDIFFERENT 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 informationarxiv:hep-ph/ v1 23 Dec 2002
Extensive Air Showers and Accelerator Data The NEEDS Workshop Ralph Engel a a Bartol Research Institute, Univ. of Delaware, Newark, DE 976, USA. arxiv:hep-ph/022340v 23 Dec 2002 Very high energy cosmic
More informationUltra-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 informationHadronic 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 informationThe 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 informationOn 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 informationHigh 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 informationCosmic Ray Interaction Models: an Overview
EPJ Web of Conferences will be set by the publisher DOI: will be set by the publisher c Owned by the authors, published by EDP Sciences, 2016 Cosmic Ray Interaction Models: an Overview Sergey Ostapchenko
More informationHow 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 informationHadronic collisions: physics, models and event generators used for simulating the cosmic ray cascade at the highest energies
Hadronic collisions: physics, models and event generators used for simulating the cosmic ray cascade at the highest energies J. Ranft Physics Dept. Universität Siegen, D 5768 Siegen, Germany, e mail: Johannes.Ranft@cern.ch
More informationModelling 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 informationExperimental 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 informationarxiv: v1 [hep-ph] 26 Jun 2007
Status of QGSJET Sergey Ostapchenko University of Karlsruhe, Institut für Experimentelle Kernphysik, 762 Karlsruhe, Germany arxiv:76.3784v [hep-ph] 26 Jun 27 Abstract. Basic physics concepts of the QGSJET
More informationLHC 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 informationand 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 informationScience 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 informationCosmic-ray energy spectrum around the knee
Cosmic-ray energy spectrum around the knee M. SHIBATA Department of Physics, Yokohama National University, Yokohama, 240-8501, Japan Interesting global and fine structures of cosmic-ray energy spectrum
More informationCORSIKA 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 informationHadronic 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 informationExtensive 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 informationMultiple Parton-Parton Interactions: from pp to A-A
Multiple Parton-Parton Interactions: from pp to A-A Andreas Morsch CERN QCD Challenges at LHC Taxco, Mexico, Jan 18-22 (2016) Multiple Parton-Parton Interactions Phys. Lett. B 167 (1986) 476 Q i 2 Λ QCD
More informationQCD 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 informationDiffraction 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 informationAntibaryon to Baryon Production Ratios in DPMJET-III. in Pb-Pb and p-p collision at LHC energies of the DPMJET-III Monte Carlo
Antibaryon to Baryon Production Ratios in Pb-Pb and p-p collision at LHC energies of the DPMJET-III Monte Carlo Fritz W. Bopp, Johannes Ranft, R. Engel and S. Roesler Department of Physics, Siegen University,
More informationCosmic 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 informationMeasurement 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 informationUHECR 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 informationThe hadronic interaction model Sibyll past, present and future
The hadronic interaction model Sibyll past, present and future Ralph Engel 1,a, Felix Riehn 1,2,4,b, Anatoli Fedynitch 3, Thomas K. Gaisser 4, and Todor Stanev 4 1 Institute for Nuclear Physics (IKP),
More informationarxiv: v1 [hep-ph] 17 Dec 2018
Impact of the astic proton nucleus cross section on the prompt neutrino flux A. V. Giannini Instituto de Física, Universidade de São Paulo C.P. 66318, 5315-97 São Paulo, SP, Brazil V. P. Gonçalves High
More informationRecent results on soft QCD topics from ATLAS
Recent results on soft QCD topics from ATLAS Roman Lysák Institute of Physics, Prague on behalf of the ATLAS collaboration Bormio 2016 Overview Understanding of soft-qcd interactions has direct impact
More informationNeutral 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 informationElastic 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 informationEPOS 2 and LHC Results
EPOS 2 and LHC Results Tanguy Pierog, K. Werner, Y. Karpenko Institut für Kernphysik, Karlsruhe, Germany 46th Rencontres de Moriond, QCD, La Thuile, France March the 24th 2011 T. Pierog, KIT - 1/19 Outline
More informationTotal 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 informationUltra-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 informationUltra 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 informationLecture 3 Cross Section Measurements. Ingredients to a Cross Section
Lecture 3 Cross Section Measurements Ingredients to a Cross Section Prerequisites and Reminders... Natural Units Four-Vector Kinematics Lorentz Transformation Lorentz Boost Lorentz Invariance Rapidity
More informationTesting QCD at the LHC and the Implications of HERA DIS 2004
Testing QCD at the LHC and the Implications of HERA DIS 2004 Jon Butterworth Impact of the LHC on QCD Impact of QCD (and HERA data) at the LHC Impact of the LHC on QCD The LHC will have something to say
More informationExtensive 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 informationVerification of the CORSIKA code in the TeV energy
Verification of the CORSIKA code in the.01-500 TeV energy range 1 S.V. Ter-Antonyan and L.S. Haroyan Yerevan Physics Institute, Alikhanyan Br.2, 375036 Yerevan, Armenia Comparisons of the world experimental
More informationINFORMATION ABOUT HIGH-ENERGY HADRONIC INTERACTION PROCESSES FROM EXTENSIVE AIR SHOWER OBSERVATIONS
Dedicated to Academician Aureliu Săndulescu s 80 th Anniversary INFORMATION ABOUT HIGH-ENERGY HADRONIC INTERACTION PROCESSES FROM EXTENSIVE AIR SHOWER OBSERVATIONS H. REBEL 1,2, O. SIMA 3 1 Institut für
More informationCharged 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 informationOpportunities with diffraction
Opportunities with diffraction Krzysztof Golec-Biernat Institute of Nuclear Physics in Kraków IWHSS17, Cortona, 2 5 April 2017 Krzysztof Golec-Biernat Opportunities with diffraction 1 / 29 Plan Diffraction
More informationConstraints 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 information1 The pion bump in the gamma reay flux
1 The pion bump in the gamma reay flux Calculation of the gamma ray spectrum generated by an hadronic mechanism (that is by π decay). A pion of energy E π generated a flat spectrum between kinematical
More informationA 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 informationarxiv: v1 [hep-ph] 5 Nov 2014
Hard probes and the event generator EPOS arxiv:1411.1336v1 [hep-ph] 5 Nov 2014 B Guiot and K Werner SUBATECH, University of Nantes-IN2P3/CNRS-EMN, Nantes, France E-mail: guiot@subatech.in2p3.fr Abstract.
More informationDiffractive dijet photoproduction in UPCs at the LHC
Diffractive dijet photoproduction in UPCs at the LHC V. Guzey Petersburg Nuclear Physics Institute (PNPI), National Research Center Kurchatov Institute, Gatchina, Russia Outline: l Diffractive dijet photoproduction
More informationDouble- & multi-parton scatterings in p-a collisions at the LHC
Double- & multi-parton scatterings in p-a collisions at the LHC Workshop on p-a collisions at the LHC ECT* Trento, 10th May 2013 David d'enterria CERN (*) Part of the results based on: Dd'E & A. Snigirev,
More informationLooking 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 informationRecent QCD results from ATLAS
Recent QCD results from ATLAS PASCOS 2013 Vojtech Pleskot Charles University in Prague 21.11.2013 Introduction / Outline Soft QCD: Underlying event in jet events @7TeV (2010 data) Hard double parton interactions
More informationQCD at Cosmic Energies - VII May 16-20, 2016 Chalkida, Greece Multiparton interactions in Herwig
QCD at Cosmic Energies - VII May 6-20, 206 Chalkida, Greece Multiparton interactions in Herwig Frashër Loshaj Table of Contents Introduction 2 MPI and the Underlying event 3 Soft interactions 4 Diffraction
More informationCollective flow in (anti)proton-proton collision at Tevatron and LHC
Collective flow in (anti)proton-proton collision at Tevatron and LHC Tanguy Pierog, K. Werner, Y. Karpenko, S. Porteboeuf Institut für Kernphysik, Karlsruhe, Germany XLVth Rencontres de Moriond, QCD, La
More informationMini-Bias and Underlying Event Studies at CMS
Yuan Chao Department of Physics National Taiwan University 1617 Taipei, TAIWAN 1 Introduction The Tevatron experiments provide us very good information for the quantum chromodynamics (QCD) modelings of
More informationReview of LHCb results on MPI, soft QCD and diffraction
Review of LHCb results on MPI, soft QCD and diffraction Marcin Kucharczyk on behalf of LHCb collaboration HNI Krakow EDS Blois 2015, Borgo (Corse), 30.06.2015 Outline LHCb - general purpose forward experiment
More informationLHC MPI and underlying event results
LHC MPI and underlying event results Marianna Testa (ATLAS) for the ALICE, ATLAS, CMS & LHCb collaborations SM@LHC 2012, Copenhagen, 10-13 April 2012 The Underlying Event Everything in hadron collisions
More informationMBR Monte Carlo Simulation in PYTHIA8
The Rockefeller University, 10 York Avenue, New York, NY 06, USA E-mail: robert.ciesielski@rockefeller.edu Konstantin Goulianos The Rockefeller University, 10 York Avenue, New York, NY 06, USA E-mail:
More informationAtlas results on diffraction
Atlas results on diffraction Alessia Bruni INFN Bologna, Italy for the ATLAS collaboration Rencontres du Viet Nam 14th Workshop on Elastic and Diffractive Scattering Qui Nhon, 16/12/2011 EDS 2011 Alessia
More informationMeasurements 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 informationJournal 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 informationJet and Minijet Contributions to Transverse Momentum Correlations in High Energy Collisions
Jet and Minijet Contributions to Transverse Momentum Correlations in High Energy Collisions Mike Catanzaro August 14, 2009 1 Intro I have been studying the effects of jet and minijet production on momentum
More informationarxiv:astro-ph/ v1 7 Feb 2002
The Composition of Cosmic Rays at the Knee S.P. Swordy a L.F. Fortson b,a J. Hinton a J. Hörandel a,j J. Knapp c C.L. Pryke a T. Shibata d S.P. Wakely a Z. Cao e M. L. Cherry f S. Coutu g J. Cronin a R.
More informationCORSIKA: Extensive Air Shower Simulation
CORSIKA: Extensive Air Shower Simulation Stefan Klepser DESY Zeuthen, Humboldt-Universität zu Berlin dec 2006 Outline CORSIKA basics introduction work flow the code steering a simulation Interaction Models
More informationThe Escape Model. Michael Kachelrieß NTNU, Trondheim. with G.Giacinti, O.Kalashev, A.Nernov, V.Savchenko, D.Semikoz
The Escape Model Michael Kachelrieß NTNU, Trondheim [] with G.Giacinti, O.Kalashev, A.Nernov, V.Savchenko, D.Semikoz Introduction Outline Outline of the talk 1 Introduction Results on Composition 2 Escape
More informationAir 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 informationExtrapolation 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 informationSome studies for ALICE
Some studies for ALICE Motivations for a p-p programme in ALICE Special features of the ALICE detector Preliminary studies of Physics Performances of ALICE for the measurement of some global properties
More informationParticle spectra in Minimum Bias events at 13TeV
Particle spectra in Minimum Bias events at TeV Juan Manuel Grados Luyando on behalf of the CMS collaboration Deutsches Elektronen-Synchrotron, Hamburg MPI@LHC 05 Trieste, Italy Motivation Probe the different
More informationDouble & multi parton scatterings in p-a collisions at the LHC
Double & multi parton scatterings in p-a collisions at the LHC Workshop on MPI at the LHC Tel Aviv University, 17th Oct. 2012 David d'enterria CERN (*) Part of the results based on: Dd'E & A. Snigirev
More informationFactorisation in diffractive ep interactions. Alice Valkárová Charles University, Prague
Factorisation in diffractive ep interactions Alice Valkárová Charles University, Prague 8th International Workshop on Multiple Partonic Interactions at the LHC, San Cristóbal de las Casas, 2016 HERA collider
More informationProton-lead measurements using the ATLAS detector
Proton-lead measurements using the ATLAS detector Martin Spousta for the ATLAS Collaboration Charles University in Prague DOI: http://dx.doi.org/10.3204/desy-proc-2014-04/275 Measurements of soft and hard
More informationMulti parton interactions B.Blok (Technion)
Multi parton interactions MPI@LHC B.Blok (Technion) Introduction The conventional dijet production in high energy process:. 2 Realistic process however-more than I hard interactions-mpi. Can occur either
More informationPROTON AND LIGHT ION INTERACTIONS IN COSMIC RAY EXPERIMENT STRATOSPHERE IN THE COMPARISON WITH THE RECENT COLLIDER RESULTS
PROTON AND LIGHT ION INTERACTIONS IN IN THE COMPARISON WITH THE RECENT COLLIDER RESULTS A.Kh. Argynova a, N.I. Kochelev b, T.N. Kvochkina c, A.A. Loktionov a,t.kh. Sadykov a, N.N. Zastrozhnova a, a, S.Zh.
More informationMeasurement 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 informationToward an Understanding of Hadron-Hadron. Collisions From Feynman-Field to the LHC
Toward an Understanding of Hadron-Hadron Collisions From Feynman-Field to the LHC Rick Field University of Florida Outline of Talk The old days of Feynman-Field Phenomenology. XXIèmes Rencontres de Blois
More informationarxiv: v1 [hep-ex] 9 Jan 2019
Quarkonium production as a function of charged-particle multiplicity in pp and p Pb collisions measured by ALICE at the LHC arxiv:1901.02627v1 [hep-ex] 9 Jan 2019 Discipline of Physics, School of Basic
More informationFirst Run-2 results from ALICE
First Run-2 results from ALICE Goethe University Frankfurt & GSI on behalf of the ALICE Collaboration XLV International Symposium on Multiparticle Dynamics Wildbad Kreuth, 4-9 Oct 2015 1 Outline Introduction
More informationarxiv: v1 [nucl-ex] 11 Jul 2011
Bulk Properties of Pb-Pb collisions at snn = 2.76 TeV measured by ALICE arxiv:17.1973v1 [nucl-ex] 11 Jul 2011 Alberica Toia for the ALICE Collaboration CERN Div. PH, 1211 Geneva 23 E-mail: alberica.toia@cern.ch
More informationseasonal variations of atmospheric leptons as a probe for charm production
seasonal variations of atmospheric leptons as a probe for charm production WIPAC & Department of Astronomy University of Wisconsin - Madison ISVHECRI 2014 CERN - August 20, 2014
More informationThe 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 informationQCD and jets physics at the LHC with CMS during the first year of data taking. Pavel Demin UCL/FYNU Louvain-la-Neuve
QCD and jets physics at the LHC with CMS during the first year of data taking Pavel Demin UCL/FYNU Louvain-la-Neuve February 8, 2006 Bon appétit! February 8, 2006 Pavel Demin UCL/FYNU 1 Why this seminar?
More informationPoS(DIS2017)208. Nuclear PDF studies with proton-lead measurements with the ALICE detector
Nuclear PDF studies with proton-lead measurements with the ALICE detector a,b for the ALICE Collaboration a Institute for Subatomic Physics, Department for Physics and Astronomy and EMMEφ, Faculty of Science,
More informationMBR Monte Carlo Simulation in PYTHIA8
MBR Monte Carlo Simulation in PYTHIA8 Robert Ciesielski, Konstantin Goulianos The Rockefeller University, 130 York Avenue, New York, NY 10065, USA E-mail: robert.ciesielski@rockefeller.edu, dino@rockefeller.edu
More informationCollider overview and kinematics
1 Collider overview and kinematics QCD studies at colliders 2 ee - ep - pp QCD collider studies Short Long distance Q: large momentum scale PEP, PETRA, Cornell, LEP, SLD, NLC SLAC, FNAL, CERN, HERA, erhic
More informationCorrelations, multiplicity distributions, and the ridge in pp and p-pb collisions
EPJ Web of Conferences, 6 (7) DOI:.5/ epjconf/76 ISMD 6 Correlations, multiplicity distributions, and the ridge in pp and p-pb collisions Alice Ohlson,a for the Collaboration Ruprecht-Karls-Universität
More informationStatus 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 informationarxiv: v1 [hep-ph] 28 May 2012
Evidence for the higher twists effects in diffractive DIS at HERA M. Sadzikowski, L. Motyka, W. S lomiński Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 3-59 Kraków, Poland We
More informationStatus of diffractive models. Robert Ciesielski [The Rockefeller University]
Status of diffractive models Robert Ciesielski [The Rockefeller University] CTEQ Workshop, QCD tool for LHC Physics: From 8 to 14 TeV, what is needed and why FNAL, 14 November, 2013 1 Main processes contributing
More informationAir Shower Simulations for NAHSA
Katholieke Universiteit Nijmegen Project in High Energy Cosmic Rays Air Shower Simulations for NAHSA Author: Susana Cristina Cabral de Barros Coordenator: Dr. Charles Timmermans 12 th January 2003 Licenciatura
More informationOctober 4, :33 ws-rv9x6 Book Title main page 1. Chapter 1. Measurement of Minimum Bias Observables with ATLAS
October 4, 2018 3:33 ws-rv9x6 Book Title main page 1 Chapter 1 Measurement of Minimum Bias Observables with ATLAS arxiv:1706.06151v2 [hep-ex] 23 Jun 2017 Jiri Kvita Joint Laboratory for Optics, Palacky
More informationPhysique des Particules Avancées 2
Physique des Particules Avancées Interactions Fortes et Interactions Faibles Leçon 6 Les collisions p p (http://dpnc.unige.ch/~bravar/ppa/l6) enseignant Alessandro Bravar Alessandro.Bravar@unige.ch tél.:
More information2. HEAVY QUARK PRODUCTION
2. HEAVY QUARK PRODUCTION In this chapter a brief overview of the theoretical and experimental knowledge of heavy quark production is given. In particular the production of open beauty and J/ψ in hadronic
More informationLongitudinal 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 informationStudies on the definition of inelastic Non-Single Diffractive events
Studies on the definition of inelastic Non-Single Diffractive events Armando Bermúdez Martínez Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Havana, Cuba Supervisor: Hannes Jung September,
More informationHigh Energy Physics. Lecture 9. Deep Inelastic Scattering Scaling Violation. HEP Lecture 9 1
High Energy Physics Lecture 9 Deep Inelastic Scattering Scaling Violation HEP Lecture 9 1 Deep Inelastic Scattering: The reaction equation of DIS is written e+ p e+ X where X is a system of outgoing hadrons
More information