The LHCf data hadronic interactions and UHECR showers. Paolo Lipari LHCf meeting Catania, 6th july 2011
|
|
- Abel Hampton
- 5 years ago
- Views:
Transcription
1 The LHCf data hadronic interactions and UHECR showers Paolo Lipari LHCf meeting Catania, 6th july 2011
2 ~50 years of UHECR Problems of determination of: Energy Mass A Hadronic interaction Modeling Measure a single slice of the shower at the ground
3 ~50 years of UHECR hadrons Diferent components Hadronic interaction Modeling Measure a single slice of the shower at the ground
4 The Fly's Eye Detector concept Quasi-Calorimetric Energy Measurement Fluorescence Light
5 Observed Light Emitted Photons Geometry Atmospheric Absorption Shower Size Fluorescence Yields
6 Small Model dependence
7 Area Energy Shape depends on : Primary Identity Interaction Model
8
9 Longitudinal Development Longitudinal Development Shape studies
10 Fixed Target measurements COLLIDERS Nucleus targets Pion/kaon projectiles. Cover entire kinematical Phase Space [including fast particles in forward region] Fixed Target Cern Tevatron LHC
11 COMPOSITION of UHECR Very high astrophysical importance Controversial - inconsistent observations. Xmax Fluctuations of Xmax Other methods
12 AUGER
13 AUGER Shower fuctuations
14 HiRes 2009
15 HIRES 2009 Fluctuations on Xmax
16 Xmax and the Composition of Cosmic Rays
17 p He O Fe
18 p He O Fe Measurements of
19 p He O Fe Measurements of Composition evolution.
20 The theory curves <Xmax(E)> are determined by the parameters that describe hadronic interactions. (and by their energy dependence). Interaction Lengths Multiplicity Inclusive Spectra... Theoretical curves:
21 Importance of CORNERS Abrupt change in the variation of the properties of hadronic interactions with energy Abrupt change in the composition evolution.
22 Electromagnetic Showers versus Hadronic Showers Toy model discussion.
23 Electromagnetic Shower Pair production Bremsstrahlung Radiation Length (Energy independent) Vertices : theoretically understood (and scaling)
24 Electromagnetic Showers Logarithmic growth of the penetration. Energy Conservation 2 Elongation rate = 85 (g/cm )/decade
25 Heitler toy model for electromagnetic showerws Electron-photon particle Splitting length λ Critical energy ε
26 Electromagnetic showers: Fluctuations:
27 Proton Shower Vertices : theoretically not Understood (and energy dependent)
28 HADRONIC INTERACTIONS Leading nucleon 50% of energy π ο γγ Electromagnetic Shower Decay Inclusive spectra of secondary particles Interaction
29 Toy Model for hadronic shower Energy equally divided among n photons. n
30 st 1 interaction Development of photon shower of energy E/n
31 Interaction Length Equivalent to photon shower Particle production properties
32 Interaction length Softness Elongation Rate Evolution with Energy of the Interaction length Evolution with energy of the softness of the spectrum
33 Scaling model : 85 (g/cm2)/decade Increasing cross sections Softer spectra Elongation Rate for protons Log[Energy]
34 Total pp Cross Section
35 Interaction Lengths (proton, pion) π p
36 From LHCf TDR
37 Phenomenological Evidence for SCALING FERMILAB: pp Brenner et al (1982)
38 NUCLEAR efects: pp vs 12 p- C NA49
39 EXTRAPOLATION to HIGH ENERGY (Pythia pp)
40 EXTRAPOLATION to HIGH ENERGY (Pythia pp) Large scaling violation for central particles
41 EXTRAPOLATION to HIGH ENERGY (Pythia pp) Small scaling violation [?] for forward particles
42 Sibyll Montecarlo code
43 PYTHIA PROTON Spectra protons Antiprotons
44 PROTON Spectra (elasticity spectra)
45 PROTON Spectra (elasticity spectra)
46 From Cosmic Ray Data Hadronic Interactions C.R. DATA Astrophysical Information Astrophysical Composition Methods Hadronic Interactions 1 < A < 56 (very likely)
47 Astrophysical Composition Methods Energy Spectrum imprints of Energy Loss Cosmic Magnetic Spectrometer
48 IF one accepts (at least for the sake of discussion) the astrophysical hints of a proton dominated composition...
49 IF one accepts (at least for the sake of discussion) the astrophysical hints of a proton dominated composition... Proton Line!! (?)
50 If the highest energy CR are protons Models incorrect. Need to make the showers shorter! [higher cross sections, softer spectra] If the highest energy CR are mostly iron: Models incorrect. Need to make the showers longer! [smaller cross sections, harder spectra]
51 From Accelerator Data + Theory Astrophysics C.R. DATA Astrophysical Information Hadronic Interactions Energy Spectrum Composition Cross sections, Inclusive spectra Multiplicities
52 ... Let us measure the inclusive particle spectra at high energy in a laboratory!...
53 ... but the measurements have been performed...
54 LHCf data hep-ex/ [photon distributions in 2 very forward angular regions]
55
56 LARGE DISCREPANCIES!! What is the signifcance for the understanding of hadronic interactions? What is the impact on the interpretation of UHECR?
57 Pseudo-Rapidity versus angle: Very small angle production:
58
59 Directly relevant for UHECR shower development pt distribution dependence
60
61
62 Rapidity distribution [for a fxed energy] PT distribution [for a fxed energy]
63 Transverse-Momentum Distribution
64 Transverse-Momentum Distribution Tsallis parametrization Used by CMS
65 Pseudo-Rapidity Distribution (E = 1500 GeV)
66 Given a fxed Transverse-momentum distribution One obtains a pseudorapidity distribution Factorized transverse momentum distribution: Translation of the same shape for pseudo-rapidity
67
68 Fraction of events in angular acceptance windows
69 Fraction of events in angular acceptance windows
70 Ratio [High pseudo-rapidity] / [Low pseudo-rapidity]
71 LHCf data
72 Ratio [High Rapidity] / [Low Rapidity] for LHCf DATA
73 The pt distribution a sqrt[s] = 7 TeV is not a Gaussian of energy independent width. Data E (TeV)
74 Ratio [High Rapidity] / [Low Rapidity] DATA Pythia Sibyll
75 Common qualitative behaviour for ALL MC codes Curvature in the ratio With a minimum
76 Large diference between SIBYLL PYTHIA
77 Compare Pythia/Sibyll inclusive photon distribution: Remarkably similar! [pp interactions]
78 Compare Pythia/Sibyll charged pion distribution
79 Compare the Energy fow
80 Pythia (photon/charged pion energy distributions) Photon spectrum is softer
81 Average pt for photons for diferent energy regions
82
83 pt of photon determined by pt of parent pion `
84 Average pt for photons and pions for diferent energy regions SIBYLL MC code
85
86
87
88
89 Most of the large discrepancies between Data and Montecarlo codes can be attributed to an incorrect modeling of the Transverse Momentum distributions.
90 Most of the large discrepancies between Data and Montecarlo codes can be attributed to an incorrect modeling of the Transverse Momentum distributions. Without a good understanding of these Transverse Momentum distributions, it is not possible to interpret in a non-ambiguous way the LHCF published data for UHECR shower development.
91 Most of the large discrepancies between Data and Montecarlo codes can be attributed to an incorrect modeling of the Transverse Momentum distributions. Without a good understanding of these Transverse Momentum distributions, it is not possible to interpret in a non-ambiguous way the LHCF published data for UHECR shower development. Can the LHCf instrument (together with other detectors at LHC) give more information on the pseudo-rapidity distributions?
92 We are studying at the same time Gigantic Astrophysical Beasts Millions of light years away Length scale cm Microscopic Partonic constituents of matter -15 Length scale 10 cm Exciting Difcult
93 Xmax fuctuations Auger HiRes
94 Xmax fuctuations Auger Quasi monotonically Decreasing RMS Constant RMS HiRes
95 Overall comparison of Xmax data with QGSJET02 p and FE HIRES
96 FLUCTUATIONS Toy model on
97 Nuclear interaction. Several Nucleons Interact at same point.
98
99
100 Mixing Protons with Iron-nuclei
101 THEORY Construction of Hadronic Models
102 Hadronic Interactions Composite (complex) Objects Multiple interaction structure QCD
103 Cartoon of a pp interaction in the transverse plane
104 Total Cross section Properties of Particle Production Multiplicities Energy spectra...
105 Total Cross section Properties of Particle Production Multiplicities Energy spectra... Higher cross section Larger Multiplicity More complex events
106 Elastic Scattering Amplitude : PROFILE Function EIKONAL Function
107 Total, elastic, inelastic cross section Expressed in terms of the profle function
108 Total, Elastic, Difractive Cross Sections: 1 minute of 19th century physics : The OPTICAL ANALOGY. Absorption and Scattering of light from an Opaque screen
109 Black Disk Of radius R. Difraction Pattern
110 Elastic scattering distributions Larger Gray Disk smaller Black Disk
111 Absorption profles Elastic scattering
112 ISR 62.3 GeV CERN UA4 546 GeV
113 Absorption profle obtained from the elastic scattering of pp ISR, CERN SpS (UA4), CDF Failure of factorization
114 Interaction Probability Interpretation of the eikonal function Multiple interactions
115 Identifcation of Eikonal function with The average number of elementary interactions At impact parameter b. Cross section for elementary interactions
116 Identifcation of Eikonal function with The average number of elementary interactions At impact parameter b. Construction of Fluctuations of this average quantity. Explicit construction of the fnal state At the parton level.
117 Perturbative contribution to the Parton cross section Infrared Divergence!! (complete failure of perturbation theory) Attempts to resum the soft part.
118 Parton Distribution Function
119
120
121 MULTIPLE INTERACTIONS Estimate of the average number of Elementary interactions per pp scattering Spatial Distribution [proton spin] (Transverse coordinates) of the partonic constituents. Fluctuations of the parton confguration of an interactig hadron. Beyond PDF's Parton Distribution Functions
122 Good-Walker ansatz for inelastic difraction. [Extension of the optical analogy] Scattering of polarized light from a polarimeter Polarizing gray disk Incident beam: Absorption of Out scattered light In polarizations Elastic scattering inelastic difraction
123 Extension of the Good-Walker Ansatz to the scattering of Hadronic Waves. Observable states. Transmission eigenstates [ Parton Confguration states ] (Miettinen-Pumplin) 2 orthonormal basis In Hilbert space
124 One profle function for each transmission eigenstate
125
126 Description of the Underlying Event Qualitative result: Events with 1 hard scatterings Have more activity (larger multiplicity,...) Than the average event. 1. Select more central (lower b) interactions. 2. Select events where the colliding hadrons have certain parton confgurations (for example: more gluons in appropriate x interval)
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 informationUniversality (and its limitations) in Cosmic Ray shower development
Universality (and its limitations) in Cosmic Ray shower development Paolo Lipari, INFN Roma Sapienza Cosmic Ray International Seminar 2015 Gallipoli 14th september 2015 Definition of universality in the
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 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 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 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 informationpa 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 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 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 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 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 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 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 informationZero 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 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 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 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 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 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 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 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 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 informationParameters 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 informationUsing Drell-Yan to Probe the
Using Drell-Yan to Probe the Underlying Event in Run 2 at CDF Deepak Kar University of Florida (On behalf of the CDF Collaboration) Experimental Particle Physics Seminar 30 th October 2008 Prologue: We
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 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 informationFirst indication of LPM effect in LHCf, an LHC experiment
First indication of LPM effect in LHCf, an LHC experiment M. Del Prete 1,2,a on behalf of LHCf collaboration 1 INFN section of Florence, Italy 2 University of Florence, Italy Abstract. The Large Hadron
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 informationQCD Studies at LHC with the Atlas detector
QCD Studies at LHC with the Atlas detector Introduction Sebastian Eckweiler - University of Mainz (on behalf of the ATLAS Collaboration) Examples of QCD studies Minimum bias & underlying event Jet-physics
More informationQCD Jets at the LHC. Leonard Apanasevich University of Illinois at Chicago. on behalf of the ATLAS and CMS collaborations
QCD Jets at the LHC Leonard Apanasevich University of Illinois at Chicago on behalf of the ATLAS and CMS collaborations Outline Physics at the LHC Jet Reconstruction and Performance Clustering Algorithms
More informationQuantum Chromodynamics at LHC
Quantum Chromodynamics at LHC Zouina Belghobsi LPTh, Université de Jijel EPAM-2011, TAZA 26 Mars 03 Avril Today s high energy colliders past, present and future proton/antiproton colliders Tevatron (1987
More informationReview 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 informationUltrahigh 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 information3.2 DIS in the quark parton model (QPM)
Experimental studies of QCD 1. Elements of QCD 2. Tests of QCD in annihilation 3. Studies of QCD in DIS 4. QCD in collisions 3.2 DIS in the quark parton model (QPM) M W Elastic scattering: W = M only one
More informationMeasurement of the associated production of direct photons and jets with the Atlas experiment at LHC. Michele Cascella
Measurement of the associated production of direct photons and jets with the Atlas experiment at LHC Michele Cascella Graduate Course in Physics University of Pisa The School of Graduate Studies in Basic
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 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 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 informationUnderstanding High Energy Neutrinos
Understanding High Energy Neutrinos Paolo Lipari: INFN Roma Sapienza NOW-2014 Conca Specchiulla 12th september 2014 An old dream is becoming a reality : Observing the Universe with Neutrinos ( A new way
More informationYear- 1 (Heavy- Ion) Physics with CMS at the LHC
Year- 1 (Heavy- Ion) Physics with CMS at the LHC Edwin Norbeck and Yasar Onel (for the CMS collaboration) University of Iowa For the 26 th Winter Workshop on Nuclear Dynamics Ocho Rios, Jamaica 8 January
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 informationObservation of Isolated High-E T Photons in Photoproduction at HERA
University of Wisconsin January1999 Observation of Isolated High-E T Photons in Photoproduction at HERA ZEUS Collaboration introduction prompt photons in photoproduction at HERA event selection rejecting
More informationPYTHIA 6.2 Tunes for Run II
PYTHIA 6.2 Tunes for Run II Outline of Talk Min-Bias Collisions! Min-Bias Generators Hadron Hadron! The in Hard Scattering Processes Proton Outgoing Parton PT(hard) Initial-State Radiation AntiProton Outgoing
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 informationFall Quarter 2010 UCSB Physics 225A & UCSD Physics 214 Homework 1
Fall Quarter 2010 UCSB Physics 225A & UCSD Physics 214 Homework 1 Problem 2 has nothing to do with what we have done in class. It introduces somewhat strange coordinates called rapidity and pseudorapidity
More informationHadronic Showers. KIP Journal Club: Calorimetry and Jets 2009/10/28 A.Kaplan & A.Tadday
Hadronic Showers KIP Journal Club: Calorimetry and Jets 2009/10/28 A.Kaplan & A.Tadday Hadronic Showers em + strong interaction with absorber similarities to em-showers, but much more complex different
More informationMin-Bias Data: Jet Evolution and Event Shapes
Min-Bias Data: Jet Evolution and Event Shapes Rick Field and David Stuart July 1, 1999 Abstract The Min-Bias data are used to study the transition between soft and hard collisions. We study this transition
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 informationA brief history of accelerators, detectors and experiments: (See Chapter 14 and Appendix H in Rolnick.)
Physics 557 Lecture 7 A brief history of accelerators, detectors and experiments: (See Chapter 14 and Appendix H in Rolnick.) First came the study of the debris from cosmic rays (the God-given particle
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 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 informationMeasurement of the Inclusive Isolated Prompt Photon Cross Section at CDF
of the Inclusive Isolated Cross at IFAE Barcelona HEP Seminar University of Virginia Outline Theoretical introduction Prompt photon production The The Photon detection prediction The pqcd NLO prediction
More informationPoS(IHEP-LHC-2011)008
in pp collisions at the LHC Sergei Lobanov Joint Institute for Nuclear Research, Dubna, Russian Federation E-mail: Sergey.Lobanov@cern.ch Artem Maevskiy M.V. Lomonosov Moscow State University, Russian
More informationJet Energy Calibration. Beate Heinemann University of Liverpool
Jet Energy Calibration Beate Heinemann University of Liverpool Fermilab, August 14th 2006 1 Outline Introduction CDF and D0 calorimeters Response corrections Multiple interactions η-dependent corrections
More informationMeasurement of photon production cross sections also in association with jets with the ATLAS detector
Nuclear and Particle Physics Proceedings 00 (07) 6 Nuclear and Particle Physics Proceedings Measurement of photon production cross sections also in association with jets with the detector Sebastien Prince
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 informationTransverse momentum and pseudorapidity distributions with minimum bias events in CMS at the LHC
Transverse momentum and pseudorapidity distributions with minimum bias events in CMS at the LHC Christof Roland/ MIT For the CMS Collaboration Rencontres de Moriond QCD Session 14 th March, 2010 Moriond
More informationQCD at CDF. Régis Lefèvre IFAE Barcelona On behalf of the CDF Collaboration
QCD at CDF Régis Lefèvre IFAE Barcelona On behalf of the CDF Collaboration Jet Inclusive Cross-Section Underlying event studies Jet Shapes Specific processes _ W+Jets, γ + γ, γ + b/c, b-jet / bb jet Diffraction
More informationExperimental results on nucleon structure Lecture I. National Nuclear Physics Summer School 2013
Experimental results on nucleon structure Lecture I Barbara Badelek University of Warsaw National Nuclear Physics Summer School 2013 Stony Brook University, July 15 26, 2013 Barbara Badelek (Univ. of Warsaw
More informationDouble Parton Scattering in CMS. Deniz SUNAR CERCI Adiyaman University On behalf of the CMS Collaboration Low-x th June 2017 Bari, Italy
Double Parton Scattering in CMS Deniz SUNAR CERCI Adiyaman University On behalf of the CMS Collaboration Low-x 2017 17th June 2017 Bari, Italy Outline Introduction to DPS DPS measurements with CMS 2b +
More informationFUTURE SPIN EXPERIMENTS AT SLAC
SLAC-PUB-9658 February 2003 FUTURE SPIN EXPERIMENTS AT SLAC Stephen Rock for the Real Photon Collaboration University of Mass, Amherst MA 01003 Abstract. A series of three photo-production experiments
More informationHadron Collider Physics, HCP2004, June 14-18
) " % "" ' & % % " ) " % '% &* ' ) * ' + " ' ) ( $#! ' "") ( * " ) +% % )( (. ' + -, '+ % &* ' ) ( 021 % # / ( * *' 5 4* 3 %( '' ' " + +% Hadron Collider Physics, HCP2004, June 14-18 The Run II DØ Detector
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 informationParticle Production Measurements at Fermilab
Particle Production Measurements at Fermilab Dr. Nickolas Solomey, IIT and Fermilab co Spokesman of E907 TEV II Astroparticle Physics Conference Univ. of Wisconsin, Madison 28 31 Aug., 2006 Particle Production
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 Charged Particle Spectra in Deep-Inelastic ep Scattering at HERA
Measurement of Charged Particle Spectra in Deep-Inelastic ep Scattering at HERA Alexander BYLINKIN ( Institute for Theoretical and Experimental Physics (ITEP), Moscow, Russia) E-mail: alexander.bylinkin@gmail.com
More informationNuclear and Particle Physics
Nuclear and Particle Physics W. S. С Williams Department of Physics, University of Oxford and St Edmund Hall, Oxford CLARENDON PRESS OXFORD 1991 Contents 1 Introduction 1.1 Historical perspective 1 1.2
More informationThe first Z boson measurement in the dimuon channel in PbPb collisions at s = 2.76 TeV at CMS
The first Z boson measurement in the dimuon channel in PbPb collisions at s = 2.76 TeV at CMS Lamia Benhabib On behalf of CMS collaboration We present the first measurement of Z bosons in the di-muon channel
More informationTests of Pythia8 Rescattering Model
Tests of Pythia8 Rescattering Model arxiv:5.325v [hep-ph] Nov 25 Tasnuva Chowdhury Shahjalal University of Science and Technology Sylhet, Bangladesh. Deepak Kar University of Witwatersrand Johannesburg,
More informationDetector Simulation. Mihaly Novak CERN PH/SFT
Detector Simulation Mihaly Novak CERN PH/SFT CERN Summer Student Program, 1 August 2017 Foreword This lecture is aimed to offer a simple and general introduction to detector simulation. Geant4 will be
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 informationThe achievements of the CERN proton antiproton collider
The achievements of the CERN proton antiproton collider Luigi DiLella Scuola Normale Superiore, Pisa, Italy Motivation of the project The proton antiproton collider UA1 and UA2 detectors Discovery of the
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 informationHigh Energy Frontier Recent Results from the LHC: Heavy Ions I
High Energy Frontier Recent Results from the LHC: Heavy Ions I Ralf Averbeck ExtreMe Matter Institute EMMI and Research Division GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Germany Winter
More informationCERN Council - Open Session 18 December Lorenzo Bonechi - INFN Firenze, Italy On behalf of the LHCf Collaboration
CERN Council - Open Session 18 December 2015 Lorenzo Bonechi - INFN Firenze, Italy On behalf of the LHCf Collaboration LHC and cosmic rays Cosmic rays: flux of charged particles hitting the Earth atmosphere
More informationProbing 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 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 informationarxiv: v1 [hep-ph] 19 Nov 2018
Probing QCD approach to thermal equilibrium with ultrahigh energy cosmic rays arxiv:1811.07728v1 [hep-ph] 19 Nov 2018 Department of Physics & Astronomy, Lehman College, CUNY, NY 10468, USA Department of
More informationGlauber modelling in high-energy nuclear collisions. Jeremy Wilkinson
Glauber modelling in high-energy nuclear collisions Jeremy Wilkinson 16/05/2014 1 Introduction: Centrality in Pb-Pb collisions Proton-proton collisions: large multiplicities of charged particles produced
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 informationMeasurement of Properties of Electroweak Bosons with the DØ Detector
Measurement of Properties of Electroweak Bosons with the DØ Detector Laboratoire de Physique Subatomique et de Cosmologie, 53, rue des Martyrs, 38026, Grenoble Cedex, France. E-mail: Hengne.Li@in2p3.fr
More informationTevatron Energy Scan. Energy Dependence of the Underlying Event. Rick Field Craig Group & David Wilson University of Florida
Rick Field Craig Group & David Wilson University of Florida Tevatron Energy Scan Energy Dependence of the Underlying Event Outline of Talk Wine & Cheese talk, October 4, 2002. Studying the underlying event
More information51 st Cracow School of Theoretical Physics The Soft Side of the LHC Min-Bias and the Underlying Event at the LHC Rick Field University of Florida
5 st Cracow School of Theoretical Physics The Soft Side of the LHC Min-Bias and the Underlying Event at the LHC Rick Field University of Florida Lecture : Outline Review: The CDF Tevatron underlying event
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 informationInteraction of particles with matter - 2. Silvia Masciocchi, GSI and University of Heidelberg SS2017, Heidelberg May 3, 2017
Interaction of particles with matter - 2 Silvia Masciocchi, GSI and University of Heidelberg SS2017, Heidelberg May 3, 2017 Energy loss by ionization (by heavy particles) Interaction of electrons with
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 informationRecent 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 informationJet Results in pp and Pb-Pb Collisions at ALICE
Jet Results in pp and Pb-Pb Collisions at ALICE Oliver Busch for the ALICE Collaboration Motivation Jet reconstruction in ALICE Jets in pp Jets in Pb-Pb Hadron triggered recoil jets Motivation Jets originate
More informationHigh-p T Neutral Pion Production in Heavy Ion Collisions at SPS and RHIC
High- Neutral Pion Production in Heavy Ion Collisions at SPS and RHIC K. Reygers for the WA98 and the PHENIX collaboration Institut für Kernphysik der Universität Münster Wilhelm-Klemm-Str. 9, D-4849 Münster,
More informationLHC Heavy Ion Physics Lecture 5: Jets, W, Z, photons
LHC Heavy Ion Physics Lecture 5: Jets, W, Z, photons HUGS 2015 Bolek Wyslouch Techniques to study the plasma Radiation of hadrons Azimuthal asymmetry and radial expansion Energy loss by quarks, gluons
More informationet Experiments at LHC
et Experiments at LHC (as opposed to Jet Physics at RHIC ) JET Collaboration Symposium Montreal June 2015 Heavy-ion jet results at LHC Dijet asymmetries Observation of a Centrality-Dependent Dijet Asymmetry
More informationLHCP QCD at the Tevatron. Rick Field University of Florida (for the CDF & D0 Collaborations) Outline of Talk. with help from Christina Mesropian
with help from Christina Mesropian QCD at the Tevatron Rick Field University of Florida (for the CDF & D0 Collaborations) Outline of Talk D0 Photon + Jet Measurements. CDF W/Z + Upsilon Search. CDF Measurements
More informationExam Results. Force between charges. Electric field lines. Other particles and fields
Exam: Exam scores posted on Learn@UW No homework due next week Exam Results F D C BC B AB A Phy107 Fall 2006 1 Particles and fields We have talked about several particles Electron,, proton, neutron, quark
More informationCharged particle multiplicity in proton-proton collisions with ALICE
Charged particle multiplicity in proton-proton collisions with ALICE Introduction on the motivations for a pp physics programme with ALICE A short review on the detectors used to reconstruct charged particle
More informationPhysics 663. Particle Physics Phenomenology. April 23, Physics 663, lecture 4 1
Physics 663 Particle Physics Phenomenology April 23, 2002 Physics 663, lecture 4 1 Detectors Interaction of Charged Particles and Radiation with Matter Ionization loss of charged particles Coulomb scattering
More informationPhysics at Hadron Colliders
Physics at Hadron Colliders Part 2 Standard Model Physics Test of Quantum Chromodynamics - Jet production - W/Z production - Production of Top quarks Precision measurements -W mass - Top-quark mass QCD
More informationQGP Physics from Fixed Target to LHC
QGP Physics from Fixed Target to LHC 2. Kinematic Variables Prof. Dr. Klaus Reygers, Prof. Dr. Johanna Stachel Physikalisches Institut, Universität Heidelberg SS 2015 1 May 5, 2015: First collisions at
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 informationTracker material study with the energy flow through the CMS electromagnetic calorimeter. Riccardo Paramatti, Ambra Provenza
Tracker material study with the energy flow through the CMS electromagnetic calorimeter Riccardo Paramatti, Ambra Provenza The electromagnetc calorimeter (ECAL) To detect photons and electrons iη=85 iη=1
More informationTeV energy physics at LHC and in cosmic rays
Vulcano 2016 TeV energy physics at LHC and in cosmic rays Anatoly Petrukhin National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia Many physicists dream and hope to find
More information