Oct23-2008 論文セミナー. Abstract  Au+Au √s NN =62.4GeV  mid-rapidity, 7 centrality classes  m T spectra  dN/dy  energy dependence (SPS, AGS data)  yield.

Slides:

Advertisements

Similar presentations

Physics Results of the NA49 exp. on Nucleus – Nucleus Collisions at SPS Energies P. Christakoglou, A. Petridis, M. Vassiliou Athens University HEP2006,

Advertisements

Quark Matter 2006 ( ) Excitation functions of baryon anomaly and freeze-out properties at RHIC-PHENIX Tatsuya Chujo (University of Tsukuba) for.

K*(892) Resonance Production in Au+Au and Cu+Cu Collisions at  s NN = 200 GeV & 62.4 GeV Motivation Analysis and Results Summary 1 Sadhana Dash Institute.

Results from PHENIX on deuteron and anti- deuteron production in Au+Au collisions at RHIC Joakim Nystrand University of Bergen for the PHENIX Collaboration.

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

17-Nov-2004G.S.F.Stephans Exploring the Phase Diagram of Strongly Interacting Matter Exploring the Phase Diagram: The RHIC Contribution  RHIC is currently.

Strangeness production in STAR Jun Takahashi for the STAR collaboration.

Mid-rapidity charged hadron spectra in the Au+Au collisions at sqrt(s NN ) = 19.6 GeV at STAR University of California, Davis for the STAR Collaboration.

Interesting Physics beyond the QGP discovery phase Heavy flavor production Flavor dependence of QCD energy loss Jet studies and gluon-jet correlations.

D. Cebra July 18-24, 2002 QM2002 Nantes 1 QM2002 Poster - Version updated 13-Jul-02 Daniel Cebra University of California, Davis For the STAR Collaboration.

STAR STRANGENESS! K0sK0s    K+K+ (Preliminary)         

Topological D-meson Reconstruction with STAR Using the Silicon Vertex Tracker (SVT) Sarah LaPointe Wayne State University SVT review, BNL, July 7 th /8.

5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.

The Balance Function: Experimental Studies in STAR Marguerite Belt Tonjes, G.D. Westfall, A.M. Vander Molen, the STAR collaboration.

 PID spectra in STAR  Baryon/anti-baryon ratios  Mixed hadron ratios  Statistical models  Chemical fits  Quark coalescence  Sudden hadronization.

1 Statistical Models and STAR’s Strange Data Sevil Salur Yale University for the STAR Collaboration.

Hadronic Resonances in Heavy-Ion Collisions at ALICE A.G. Knospe for the ALICE Collaboration The University of Texas at Austin 25 July 2013.

Masashi Kaneta, LBNL Masashi Kaneta for the STAR collaboration Lawrence Berkeley National Lab. First results from STAR experiment at RHIC - Soft hadron.

Rashmi Raniwala Hot & Dense Matter in RHIC-LHC Era, February 12-14, 2008, TIFR, Mumbai 1 Rashmi Raniwala Department of Physics University of Rajasthan.

Sevil Salur for STAR Collaboration, Yale University WHAT IS A PENTAQUARK? STAR at RHIC, BNL measures charged particles via Time Projection Chamber. Due.

HFT + TOF: Heavy Flavor Physics Yifei Zhang University of Science & Technology of China Lawrence Berkeley National Lab TOF Workshop, Hangzhou, April,

Nov2,2001High P T Workshop, BNL Julia Velkovska High pt Hadrons from  sNN = 130 GeV Au-Au collisions measured in PHENIX Julia Velkovska (BNL) for PHENIX.

1 Identified particle production in the Beam Energy Scan from STAR Anthony Timmins for the STAR Collaboration  The Beam energy scan  The STAR experiment.

Partonic Collectivity at RHIC ShuSu Shi for the STAR collaboration Lawrence Berkeley National Laboratory Central China Normal University.

SQM2004, Cape Town, Sept. 16, 2004 STAR 1 Cronin Effect for the identified particles from 200 GeV d+Au collisions Xiangzhou Cai Shanghai INstitute of Applied.

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

 Production at forward Rapidity in d+Au Collisions at 200 GeV The STAR Forward TPCs Lambda Reconstruction Lambda Spectra & Yields Centrality Dependence.

Matter System Size and Energy Dependence of Strangeness Production Sevil Salur Yale University for the STAR Collaboration.

STAR Strangeness production and Cronin effect in d+Au collisions at √s NN = 200 GeV in STAR For the STAR Collaboration Xianglei Zhu (Tsinghua U / UCLA)

Grazyna Odyniec STAR physics program and technical challenges with the RHIC Au+Au energy scan Grazyna Odyniec/LBNL for STAR collaboration QM 2008, Jaipur,

Statistical Model Predictions for p+p and Pb+Pb Collisions at LHC Ingrid Kraus Nikhef and TU Darmstadt.

Do small systems equilibrate chemically? Ingrid Kraus TU Darmstadt.

Introduction The statistical model approach is established by analysis of particle ratios of the high energy heavy ion collisions in GSI-SIS to CERN-SPS.

G. Musulmanbekov, K. Gudima, D.Dryablov, V.Geger, E.Litvinenko, V.Voronyuk, M.Kapishin, A.Zinchenko, V.Vasendina Physics Priorities at NICA/MPD.

Recent Charm Measurements through Hadronic Decay Channels with STAR at RHIC in 200 GeV Cu+Cu Collisions Stephen Baumgart for the STAR Collaboration, Yale.

UC Davis June st Rosi Reed Low Energy Test Run Results Rosi Reed University of California at Davis.

STAR Helen Caines The Ohio State University QM 2001 Jan 2001 Strangeness Production at RHIC.

Light nuclei production in heavy-ion collisions at RHIC Md. Rihan Haque, for the STAR Collaboration Abstract Light nuclei (anti-nuclei) can be produced.

Helen Caines Yale University 1 st Meeting of the Group on Hadronic Physics, Fermi Lab. – Oct Bulk matter properties in RHIC collisions.

Robert Pak (BNL) 2012 RHIC & AGS Annual Users' Meeting 0 Energy Ro Robert Pak for PHENIX Collaboration.

1 Energy and system size dependence of strangeness production, from SPS to RHIC Jun Takahashi & Marcelo Munhoz for the STAR collaboration.

Abhilash Nair STAR Collaboration University of Illinois at Chicago 1 STAR.

9 th June 2008 Seminar at UC Riverside Probing the QCD Phase Diagram Aneta Iordanova.

Masashi Kaneta, LBL Hadron Spectra in Au+Au Collisions by STAR Experiment at RHIC Masashi Kaneta for the STAR collaboration LBNL.

1 Guannan Xie Nuclear Modification Factor of D 0 Mesons in Au+Au Collisions at √s NN = 200 GeV Lawrence Berkeley National Laboratory University of Science.

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

21 st June 2007 RHIC & AGS Users’ Meeting Recent RHIC Results on Bulk Properties Richard Hollis.

High Density Matter and Searches for Huan Z. Huang Department of Physics and Astronomy University of California, Los Angeles The STAR Collaboration.

Itzhak Tserruya Initial Conditions at RHIC: an Experimental Perspective RHIC-INT Workshop LBNL, May31 – June 2, 2001 Itzhak Tserruya Weizmann.

Hadronic resonance production in Pb+Pb collisions from the ALICE experiment Anders Knospe on behalf of the ALICE Collaboration The University of Texas.

BNL/ Tatsuya CHUJO JPS RHIC symposium, Chuo Univ., Tokyo Hadron Production at RHIC-PHENIX Tatsuya Chujo (BNL) for the PHENIX Collaboration.

Christina MarkertHirschegg, Jan 16-22, Resonance Production in Heavy Ion Collisions Christina Markert, Kent State University Resonances in Medium.

24 June 2007 Strangeness in Quark Matter 2007 STAR 2S0Q0M72S0Q0M7 Strangeness and bulk freeze- out properties at RHIC Aneta Iordanova.

QGP-Meet’06, VECC, Kolkata. 6 th Feb-2006 RAGHUNATH SAHOO, INSTITUTE OF PHYSICS, BHUBANESWAR TRANSVERSE ENERGY PRODUCTION AT RHIC OUTLINE: Introduction.

A. Pulvirenti - Resonances measurement in pp and PbPb with ALICE 1 Outline The Study of Short-Lived Resonances with the ALICE Experiment at the LHC Ayben.

P. E. Christakoglou HEP Centrality Dependence of the Balance Function in Pb–Pb Collisions (NA49) P. CHRISTAKOGLOU – M. FARANTATOS A. PETRIDIS –

Strange hadrons and resonances at LHC energies with the ALICE detector INPC 2013 Firenze, Italy 2 -7 June 2013 A. Badalà (INFN Sezione di Catania) for.

STAR Helen Caines The Ohio State University QM 2001 Jan 2001 Strangeness Production at RHIC.

Al+Au Analysis Plan Why study asymmetric systems like Al+Au (or Cu+Au as was recently done at RHIC)? Collisions of symmetric heavy ions do not create a.

SEARCH FOR STRANGE PARTICLES Physics Discussion of the ALICE measurement topic of the measurement, what should be combined/shown/discussed (and how ) ALICE©

Direct Photon v 2 Study in 200 GeV AuAu Collisions at RHIC Guoji Lin (Yale) For STAR Collaboration RHIC & AGS Users’ Meeting, BNL, June 5-9.

What can we learn from high-p T azimuthal correlations of neutral strange baryons and mesons at RHIC ? Jana Bielcikova (Yale University) for the STAR Collaboration.

Fall DNP Meeting,  meson production in Au-Au and d-Au collision at \ /s NN = 200 GeV Dipali Pal Vanderbilt University (for the PHENIX collaboration)

Status of 20 GeV Au+Au Analysis

STAR Geometry and Detectors

Tatsuya Chujo for the PHENIX collaboration

Outline Background Global Observables in Heavy Ion Collisions

Xiaobin Wang (for the STAR Collaboration)

“Hard” & “Soft” Interactions in Proton + Proton 200GeV

Search for the onset of baryon anomaly at RHIC-PHENIX

Presentation transcript:

Oct 論文セミナー

Abstract

 Au+Au √s NN =62.4GeV  mid-rapidity, 7 centrality classes  m T spectra  dN/dy  energy dependence (SPS, AGS data)  yield  (anti-Λ)/Λ ratio

Introduction  strange particle production  →collision でできた matter の情報  Why 62.4GeV?  ->energy scan b/w SPS & RHIC 130,200GeV  SPS : baryon dominated  RHIC : net-baryon free  hope  excitation function の情報  constrains to the thermal model predictions

STAR experiment  TPC (|y|<1.8):charged track  SVT (|y|<1.),SSD (|y|<1.) :primary/secondary vertex  SVT,TPC : dE/dx を使用して PID

experimental setup  Au+Au √s NN =62.4GeV (Run4)  mid-rapidity STAR detector(|y|<0.5)  6.5×10 6 events  7 different centrality classes  # of primary tracks(0-5% ~ 60-80%)  charged particle track : TPC -> PID

reconstruction  neutral particle reconstruction : V0 decay topology method  K0(s)->π + +π -  (anti-)Λ->(anti-)proton+(π + )π -  S/N improvement  dE/dx information (daughter tracks)  distance of closest approach (b/w daughter tracks)  some topological cuts

vertex  ex  a<0.5cm  b>2.85cm  c>0.90cm  d>5cm Λ π p b c a d

m T spectra & integrated yield  m T distribution  corrections  geometrical acceptance  detector inefficiency  anti-proton absorption  NOT contained weak decays of multi-strange particles  fitting  assuming flat rapidity distribution (|y|<0.5)

m T spectra & integrated yield

integrated yield  integrated yield  〈 N part 〉 ← Glauber model  integrated yield / 〈 N part 〉  enhancement of strangeness production as a function of centrality  most peripheral bin  same enhancement pattern with SPS experiment  earlier saturation point

Energy dependence of yield & ratio  yield of mid-rapidity  anti-Λ : monotonic increase  Λ : constant  Λ : different b/w SPS & RHIC  anti-Λ/Λ ratio energy ratio~1

conclusions  strange hyperon  new point in excitation function  integrated yield / ratio  relatively smooth behavior with energy  non-identical particle ratio に重要 (Λ/π, K/π)  typical strangeness enhancement