26.03.2009Task-Force meeting, CERN S.Kiselev 1 Jet hadrochemistry with ALICE. An idea. Sergey Kiselev, ITEP Moscow for the TOF group Medium modifications.

Slides:

Advertisements

Similar presentations

Charm and beauty with ALICE at LHC

Advertisements

Anomalous Pion Production in High Energy Particle Collisions Alexander Bylinkin, Andrey Rostovtsev XV Moscow School of Physics XXXX ITEP Winter School.

Charged Particle Jet measurements with the ALICE Experiment in pp collisions at the LHC Sidharth Kumar Prasad Wayne State University, USA for the ALICE.

A Very High Momentum Particle Identification Detector for the ALICE experiment at the LHC. Dorado del mar Puerto Rico, April 8, 2012 Edmundo García Chicago.

Jet probes of nuclear collisions: From RHIC to LHC Dan Magestro, The Ohio State University Midwest Critical Mass October 21-22, 2005.

Peter Christiansen (Lund University) for the ALICE Collaboration.

Identified particle transverse momentum distributions in 200 GeV Au+Au collisions at RHIC 刘海东中国科技大学.

Forward-Backward Correlations in Relativistic Heavy Ion Collisions Aaron Swindell, Morehouse College REU 2006: Cyclotron Institute, Texas A&M University.

A probe for hot & dense nuclear matter. Lake Louise Winter Institute 21 February, 2000 Manuel Calderón de la Barca Sánchez.

Particle Production in p + p Reactions at GeV K. Hagel Cyclotron Institute Texas A & M University for the BRAHMS Collaboration.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

1 Working Group 5: Particle Identified Studies in Jets - Status / Plans (July 23 rd, 2008) - Group Coordinator: Rene Bellwied (WSU) Group Contributors:

Understanding Jet Energy Loss with Angular Correlation Studies in PHENIX Ali Hanks for the PHENIX Collaboration 24 th Winter Workshop on Nuclear Dynamics.

PPR PWG 6 Work Plan - Correlations Working document… C. Pruneau July 23, 2008.

STAR Strangeness production in jets from p+p 200 GeV collisions Anthony Timmins for the STAR Collaboration  Motivation  Analysis  Results  Summary.

ALICE EMCal Physics and Functional Requirements Overview.

Event Simulation Tools in ALICE Andreas Morsch Generator Mini-Workshop CERN, Geneva June 20, 2003.

Fragmentation in e + -e  Collisions Dave Kettler Correlations and Fluctuations Firenze July 7-9, 2006 p hadron ee e+e+ , Z 0 LEP PETRA color dipole.

CDF Joint Physics Group June 27, 2003 Rick FieldPage 1 PYTHIA Tune A versus Run 2 Data  Compare PYTHIA Tune A with Run 2 data on the “underlying event”.

QM2006 Shanghai, China 1 High-p T Identified Hadron Production in Au+Au and Cu+Cu Collisions at RHIC-PHENIX Masahiro Konno (Univ. of Tsukuba) for the PHENIX.

High-p T results from ALICE Marco van Leeuwen, Utrecht University, for the ALICE collaboration.

28 April 0 Yaxian Mao, Daicui Zhou, Yves Schutz In ALICE Physics Workgroup: High p T and photons ( for ALICE collaboration -- Wuhan)

An experimental perspective on first jet measurements at LHC: Lessons from RHIC Dan Magestro, The Ohio State University ALICE-USA Collaboration Meeting.

BNL/ Tatsuya CHUJO CNS workshop, Tokyo Univ. Identified Charged Single Particle Spectra at RHIC-PHENIX Tatsuya Chujo (BNL) for the PHENIX.

ALICE-USA Collaboration T.M. Cormier Wayne State University for the ALICE – USA Collaboration Jet Physics in ALICE and a Proposed Electromagnetic Calorimeter.

Charged Hadron Nuclear Modification Factors in the Beam Energy Scan data from STAR Stephen Horvat for the STAR collaboration Yale University Stephen HorvatCPOD.

Studies of the jet fragmentation in p+p collisions in STAR Elena Bruna Yale University STAR Collaboration meeting, June

Heavy flavour capabilities with the ALICE TRD Benjamin Dönigus ISNP 2008 Erice/Sicily.

Fermilab MC Workshop April 30, 2003 Rick Field - Florida/CDFPage 1 The “Underlying Event” in Run 2 at CDF  Study the “underlying event” as defined by.

High Pt physics with TOF ALICE B.V.Zagreev ITEP

1 34th International Conference on High Energy Physics (ICHEP 2008) ‏ The STAR Experiment Texas A&M University A. Hamed for the STAR collaboration Direct.

Jet Physics in ALICE Mercedes López Noriega - CERN for the ALICE Collaboration Hot Quarks 2006 Villasimius, Sardinia - Italy.

1 Jets and High-p T Physics with ALICE at the LHC Andreas Morsch CERN Workshop on High p T Physics at the LHC, Jyväskylä, March 25, 2007.

Phantom Jets: the  puzzle and v 2 without hydrodynamics Rudolph C. Hwa University of Oregon Early Time Dynamics in Heavy Ion Collisions Montreal, July.

What do we learn from PHENIX high pt results Jiangyong Jia For the PHENIX Collaboration State University of NewYork at

1 Jets in Heavy Ion Collisions at the LHC Andreas Morsch CERN.

ALICE Overview Ju Hwan Kang (Yonsei) Heavy Ion Meeting June 10, 2011 Korea University, Seoul, Korea.

Nucleon-Nucleon collisions. Nucleon-nucleon interaction at low energy Interaction between two nucleons: basic for all of nuclear physics Traditional goal.

STAR Modification of high-p T hadro-chemistry in Au+Au collisions relative to p+p Anthony Timmins for the STAR Collaboration 31st July 2009 Heavy-ion III.

Andrei Rostovtsev Moscow, ITEP Low-x, June 2013 (Eilat) On behalf of H1 Collaboration.

Study of b quark contributions to non-photonic electron yields by azimuthal angular correlations between non-photonic electrons and hadrons Shingo Sakai.

Yichun Xu (USTC/BNL)April 27-29, Hangzhou, CHINA1 Measurements of identified meson and baryon production at high p T in p+p and Au+Au collisions at STAR.

07/27/2002Federica Messer High momentum particle suppression in Au-Au collisions at RHIC. Federica Messer ICHEP th international Conference on high.

Andrey Korytov, University of Florida ISMD 2003 September 5-11, 2003, Kraków Soft QCD Phenomena in High-E T Jet Events at Tevatron Andrey Korytov for CDF.

News from ALICE Jan PLUTA Heavy Ion Reaction Group (HIRG) Warsaw University of Technology February 22, XIII GDRE Workshop, SUBATECH, Nantes.

1 Marcello Lunardon - NPDC18, Praha, 2004 Perspectives for the measurement of the beauty production cross section at LHC with ALICE Marcello Lunardon for.

2010/04/18Yichun Measurements of identified hadron production at high p T in p+p and Au+Au collisions at RHIC-STAR 许依春 (Yichun Xu)

Diagnosing energy loss: PHENIX results on high-p T hadron spectra Baldo Sahlmüller, University of Münster for the PHENIX collaboration.

PWG4 meeting, CERN S.Kiselev 1 Jet hadrochemistry. PYTHIA vs HERWIG Sergey Kiselev, ITEP Moscow for the TOF group Motivation Input info/assumptions.

Jet-Hadron Azimuthal Correlation Measurements in pp Collisions at √s = 2.76 TeV and 7 TeV with ALICE 2012/08/11-18 Quark Matter 2012 Motivation PhysRevC (CMS)PhysRevC (PHENIX)

Proton to Pion ratio in Jet and Bulk region in Heavy Ion collisions Misha Veldhoen (Utrecht University) For the ALICE collaboration Hard Probes 2012 Cagliari,

Physics with the ALICE EMCal Peter Jacobs, LBNL Probing QCD matter with jets…

Non-Prompt J/ψ Measurements at STAR Zaochen Ye for the STAR Collaboration University of Illinois at Chicago The STAR Collaboration:

Mark T. Heinz Yale University

Peter Christiansen (Lund University) for the ALICE Collaboration

Jet reconstruction in ALICE using the EMCal

Strangeness Production in Heavy-Ion Collisions at STAR

Monte Carlo Tools in ALICE

Event generators.

High-pT results from ALICE

Tatsuya Chujo for the PHENIX collaboration

Modification of Fragmentation Function in Strong Interacting Medium

Jet Physics in Heavy Ion Collisions with the ALICE Detector at the LHC

of Hadronization in Nuclei

Identified Charged Hadron

Identified Charged Hadron Production

Multiplicity Dependence of Charged Particle, φ Meson and Multi-strange Particle Production in p+p Collisions at

Identified Charged Hadron Production at High pT

Masahiro Konno (Univ. of Tsukuba) for the PHENIX　Collaboration Contact

Identified Particle Production at High Transverse Momentum at RHIC

Presentation transcript:

Task-Force meeting, CERN S.Kiselev 1 Jet hadrochemistry with ALICE. An idea. Sergey Kiselev, ITEP Moscow for the TOF group Medium modifications of jet hadrochemistry ALICE PID performance Methods, variables, … Jet hadrochemistry in p+p at LHC Next steps Conclusions

Medium modifications of jet hadrochemistry Task-Force meeting, CERN S.Kiselev 2 S.Sapeta, U.A.Wiedemann EPJ, C55, 293 (2008) A unique prescription of how to model the medium modification of jet fragmentation does not exist. Medium modification of jets depends on the exchange of - momentum - color - flavor - baryon number between the partonic projectile and the medium A simple model of a parton shower with enhanced medium induced branching but unmodified hadronization is used. Parton splitting functions P q→qg, … are enhanced by one common model-independent factor (1+f med ). Since the model does not implement other effects, it may be expected to underestimate the medium modifications of jet hadrochemistry.

No medium modification MLLA (modified leading logarithmic approximation) + LPHD (local parton–hadron duality) formalism Task-Force meeting, CERN S.Kiselev 3 Fig.2. Two examples for the comparison of the MLLA+LPHD formalism with data on single inclusive spectra inside a jet as a function of the logarithm of the hadron momentum fraction ξ. (a) The distribution (4) of charged pions (π+ + π−), kaons (K+ + K−) and (anti-) protons (p + pbar) in a jet of energy Ejet = 14.5 GeV, compared to TPC data on e+e− collisions. The MLLA parameters are Λ = 155 MeV and KLPHD = (b) The MLLA+LPHD distribution of all charged hadrons in a jet of energy Ejet = 108 GeV for various opening angles Θc, compared to CDF data from p pbar collisions. The MLLA parameters are Λ = Q0 = 235 MeV, KLPHD = 0.555

Particle ratios vs p T Task-Force meeting, CERN S.Kiselev 4 ~50 – 100% medium effect Cone opening angle Θ c = 0.28

Jet modification factor J AA Task-Force meeting, CERN S.Kiselev 5 dN h /dp T (med) J AA = dN h /dp T (vac) A significantly modified jet hadrochemistry can be expected Increases with m h and E jet Maximum effect at p T ~ 5 GeV/c

TOF PID performance One can study jet hadrochemistry with TOF at 0.5 < p T < ~3-5 GeV/c Task-Force meeting, CERN S.Kiselev

ALICE PID performance Task-Force meeting, CERN S.Kiselev 7 … with ALICE at p T < ~30 GeV/c

Methods, variables, … Task-Force meeting, CERN S.Kiselev 8 Methods: - jet reconstruction - a la RHIC triggered particle azimuthal correlations Variables for each of species (π ±, K ±, p ± ): - multiplicity - longitudinal distributions - transverse distributions - ratios K ± /π ±, … Systems: - pp, PYTHIA, HERWIG, … - pA, HIJING, … - AA, HIJING, PYQUEN, …

Jet hadrochemistry in p+p at LHC Task-Force meeting, CERN S.Kiselev 9 There are theoretical speculations that at LHC energies “medium”/”collective state” can be created even in p+p (due to multiple scattering) If so, jet hadrochemistry and other characteristics of jet quenching can be used to “feel” the medium as deviations from vacuum values

Next steps Task-Force meeting, CERN S.Kiselev 10 at generator level: - comparison generator predictions with data (single inclusive spectra, … for π ±, K ±, p ± ) inside a jet - sensitivity to a generator … In the AliRoot package: - a task/macro to start analysis for pp on CAF …

Conclusions Task-Force meeting, CERN S.Kiselev 11 “The analysis of the hadrochemical composition of jets in heavy ion collisions is a terra incognita, for which data are not available yet. It is in experimental reach of the LHC.” (S.Sapeta, U.A.Wiedemann EPJ, C55, 293 (2008)) ALICE PID performance let us study medium modifications of jet hadrochemistry