QCD in Twenty-One Century

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Nu Xu 1/7 STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012 Explore QCD Emerging Property at RHIC Nu Xu (1) College of Physical Science & Technology, Central China Normal University, China (2) Nuclear Science Division, Lawrence Berkeley National Laboratory, USA Many Thanks to the Organizers!

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Explore QCD Emerging Property at RHIC Nu Xu (1) College of Physical Science & Technology, Central China Normal University, China (2) Nuclear Science Division, Lawrence Berkeley National Laboratory, USA Many Thanks to the Organizers!. QCD in Twenty-One Century. Higgs Particle – - PowerPoint PPT Presentation

Transcript of QCD in Twenty-One Century

Page 1: QCD in Twenty-One Century

Nu Xu 1/7STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012

Explore

QCD Emerging Property

at RHIC

Nu Xu

(1) College of Physical Science & Technology, Central China Normal University, China (2) Nuclear Science Division, Lawrence Berkeley National Laboratory, USA

Many Thanks to the Organizers!

Page 2: QCD in Twenty-One Century

Nu Xu 2/7STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012

QCD in Twenty-One Century

(1) Higgs Particle – - Origin of Mass

- SM The Theory

(2) QCD Phase Structure –- Confinement

- χC symmetry- Critical point, phase boundaries

- Nucleon helicity structure - … - Non-linear QCD at small-x - … Emerging properties with

QCD degrees of freedom!

Page 3: QCD in Twenty-One Century

Nu Xu 3/7STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012

STAR Physics Focus

Polarized p+p Program - Study proton intrinsic properties

Small-x Physics Program - Study low-x properties, initial condition, search for CGC - Study elastic and inelastic processes in pp2pp

1) At 200 GeV at RHIC - Study medium properties, EoS - pQCD in hot and dense medium

2) RHIC Beam Energy Scan (BES) - Search for the QCD critical point - Chiral symmetry restoration

2020 - eRHIC(eSTAR)

Page 4: QCD in Twenty-One Century

2 TE, QuarkyonicRHIC, SPS, FAIR

1 Tini, TC

LHC, RHIC3 Phase Boundary

RHIC, FAIR, NICA

The QCD Phase Diagram and High-Energy Nuclear Collisions

1 23

1st order phase

transition

Crossover

Critical Point

Page 5: QCD in Twenty-One Century

Nu Xu 5/7STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012

STAR Experiment

MRPC ToF Barrel

BBC

PMD

FPD

FMS

EMC BarrelEMC End Cap

DAQ1000

FGT

COMPLETE

Ongoing

MTD

R&DHFT

TPC

FHC

HLT

pp2pp’ pp2pp’

trigger computing

Page 6: QCD in Twenty-One Century

Nu Xu 6/7STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012

STAR Detector Configurations

1) Before 2010: TPC 2) 2010: TPC + TOF3) 2013: TPC + TOF + MTD’4) 2014: TPC + TOF + HFT + MTD

Large coverage, excellent particle ID, fast DAQ - detector all particles produced at RHIC, except neutrinos

- multiple fold correlation measurements - BES-I: 7.7 < √sNN < 39GeV // BES-II: √sNN < 20GeV, high luminosity

- Probes: bulk, penetrating, and bulk-penetrating

STAR: Perfect Mid-y Collider Experiment

Page 7: QCD in Twenty-One Century

Nu Xu 7/7STAR Topical Workshop on Fluctuations and Particle ID, Rice University, May 23 – 25, 2012

TOF and di-lepton Measurements

di-leptons:Bulk Penetrating Probe!


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