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STAR Experiment

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STAR Experiment

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  1. November 5, 2012Status of STAR Experiment at RHICStudy emergent properties of matter with QCD degrees of freedomNu Xu(1) College of Physical Science & Technology, Central China Normal University, Wuhan, 430079, China (2) Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

  2. STAR Collaboration STAR Experiment STAR Experiment at RHIC ( http://www.star.bnl.gov/ ) Fundamental science: particle physics, nuclear physics, astrophysics, cosmology, … State of art technology: detector R&D, simulations, IT, computing, mass/fast data managing, … - 550 scientists - 55 institutes - 13 countries ~ 140 PhD thesis completed since 2001

  3. STAR Detectors Fast and Fullazimuthal particle identification EMC+EEMC+FMS (-1 ≤  ≤ 4) MRPC Time Of Flight MTD2013 DAQ1000 Time Projection Chamber (TPC) Heavy Flavor Tracker (HFT) 2013 FGT 2011 BNL PAC, 21 - 22, 2010

  4. Particle Identification at STAR TPC TOF TPC TPC K pd π e, μ TOF Log10(p) Charged hadrons Hyperons & Hyper-nuclei MTD HFT Jets EMC Neutral particles Jets & Correlations High pTmuons Heavy-flavor hadrons Multiple-fold correlations among the identified particles!

  5. STAR Detector Configurations • STAR: Large coverage, excellent PID, fast DAQ • - detects nearly all particles produced at RHIC • - multiple fold correlation measurements • - Probes: bulk, penetrating, and bulk-penetrating • STAR: Perfect mid-y Collider Experiment • STAR: Expanding into high rapidity regions

  6. Data Sets at STAR Experiment Heavy Ion Collisions Polarized p+p Collisions • RHIC&STAR upgrades lead to dramatic increase data statistics • The best of STAR is still ahead of us: Precision measurements!

  7. Record on Publications May, 2012

  8. STAR BUR for Runs 13 and 14 May be 15 GeV Au+Au Collisions Run 13: 20 cryo-week. 510pp: 55% polarization Run 14: 20 cryo-week. 200pp: 65% polarization

  9. Exploring the QCD Phase Structure TERHIC, SPS, FAIR 2 Tini, TC LHC, RHIC Phase boundary RHIC,FAIR, NICA 3 1 1 2 3 Hadronic Matter Partonic Matter

  10. QCD Phase Structure Hot QCD Matter Cold QCD Matter RHIC eIC (eRHIC) Study phase structure with QCD degrees of freedom

  11. Study QCD Phase Structure HFT: HF, γ-jet, γ-hadron, e-μ, e-e,.. STAR Core Programs BES-I *e-cooling, BES-II, √sNN ≤ 20GeV Spin: W±, ΔG, AN LHC FAiRRHIC Forward tracking upgrade, connection to eRHIC CBM (√sNN ≤ 12GeV ) LHC full energy program Need more involvements in future upgrade programs!

  12. STAR Highlights

  13. Δu Δd Precision Spin Results at RHIC

  14. RHIC BES-I Highlights (1) Net-proton High Moments (2) ϕ-meson Productions Critical Fluctuations: Search for QCD critical point Multi-strange hadrons: QCD phases

  15. RHIC BES-I Highlights (3) Jet-quenching (5) “Local Parity Violation” (4) NCQ Scaling in v2 sQGP key signatures turned off!

  16. STAR 2nd White Paper Committee Membership: D. Cebra, X. Dong, J. Dunlop, O. Evdokimov, C. Gagliardi, H.Z. Huang, D. Keane, B. Mohanty (Chair), E. Sichtermann, P. Sorensen, B. Surrow, S. Wissink, N. Xu, Z.B. Xu Charges: This committee will work with the collaboration as a whole to write a concise and comprehensive summary of experimental results, from both heavy-ion collision and spin physics, since 2005. Based on the understanding of these results and the theoretical developments, the science case for continuing operation of RHIC during 2015-2020 should be outlined in the document. This White Paper is expected to be submitted to a refereed journal for publication in early 2013. Structure of the document: Chapter 1: Introduction Chapter 2: Review conclusions from previous white paper Chapter 3: New theoretical ideas Chapter 4: Initial conditions Chapter 5: Properties of sQGP Chapter 6: Exploring the QCD phase diagram (BES-I) Chapter 7: Spin physics Chapter 8: Outlook and future directions Timelines for the document: - Executive summary by end of August 2012 - Full document by February, 2013

  17. Future STAR Meetings

  18. Outlook RHIC: Dedicated facility for studying matter with QCD degrees of freedom: - Properties of QGP - Sea quark and gluon contributions to proton helicity structure - QCD critical point, phase boundary 2) Future: EIC (eRHIC, 2025 - …) - Partonic structures of nucleon and nuclei - Dynamical evolution from cold nuclear matter to hot QGP Emergent Properties of QCD Matter Phase Structures of QCD Matter

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