Presentation is loading. Please wait.

Presentation is loading. Please wait.

Nu Xu1/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 QCD in the Twenty-First Century (1)Higgs (-like) Particle – - Origin of Mass, QCD dof - Standard.

Published byWinifred Nash Modified over 9 years ago

Similar presentations

Presentation on theme: "Nu Xu1/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 QCD in the Twenty-First Century (1)Higgs (-like) Particle – - Origin of Mass, QCD dof - Standard."— Presentation transcript:

1 Nu Xu1/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 QCD in the Twenty-First Century (1)Higgs (-like) Particle – - Origin of Mass, QCD dof - Standard Model  The Theory (2) QCD Emerging Properties – - Confinement, χ C symmetry - QCD Phase Structure - Nucleon helicity structure - … - Non-linear QCD at small-x - …

2 Nu Xu2/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 High-Energy Nuclear Collisions and QCD Phase Structure Nu Xu (1,2) (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

3 Nu Xu3/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 2 T E RHIC, SPS, FAIR 3 3 Phase boundary RHIC, FAIR, NICA Exploring the QCD Phase Structure 1 1 T ini, T C LHC, RHIC 2 Partonic Matter Hadronic Matter

4 Nu Xu4/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 QCD Thermodynamics SB Ideal Gas RHICLHC 1)At μ B = 0: cross over transition, 150 < T c < 200 MeV 2)The SB ideal gas limit: T/T c ~ 10 7 3)T ini (LHC) ~ 2-3*T ini (RHIC) 4)Thermodynamic evolutions are similar for RHIC and LHC Zoltan Fodor, Lattice 2007

5 Nu Xu5/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Jets at SPS, RHIC and LHC 1)Stronger suppression at higher collision energies 2)R AA ~ 0.5 for charged hadrons at high p T (~100 GeV/c) in central Pb+Pb central collisions Nuclear modification factor:

6 Nu Xu6/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Medium Effects: Quarkonia key words: thermometer, deconfinement, Debye screen, regeneration (coalescence)

7 Nu Xu7/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 J/ψ Suppression or Enhancement mid-rapidity forward-rapidity 1)Due to large charm production cross section at LHC and coalescence process, the J/ψ R AA increased in mid-rapidity at central collisions. More such increase is expected in √s NN = 5.5 TeV Pb+Pb collisions. 2)Both suppression: “Debye Screening” and the recent observed increase: “Coalescence”, demonstrating the sQGP medium effect.

8 Model Comparisons mid-rapidity forward-rapidity 1)Models predict yield R AA well. 2)To indentify the production mechanism and study the properties of the medium: shadowing, collectivity, coalescence, etc, study: More see Pengfei’s talk.

9 Upsilon Productions 1)Temperature measurement? 2)Systematic study transverse momentum dependence of quarkonia productions in high-energy nuclear collisions:

10 Nu Xu10/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Medium Effects: Collectivity key words: partonic collectivity, thermalization, perfect liquid

11 1)Collectivity increase as collision energy 2) √s NN > 39 GeV, partonic dominant √s NN ≤ 11 GeV, hadronic dominant STAR data: arXiv:1206.5528 ALICE data: Phys. Rev. Lett. 105, 252302 (2010) Collectivity vs. Collision Energy

12 Nu Xu12/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Collectivity ~ Collision Energy ALICE: PRL105, 252302(10); arXiv:1208.1974 STAR: PRC66, 034904(02); PRC72, 014904(05); PHENIX: PRL98, 162301(07); PHOBOS: PRL98, 242302 (07) CERES: NPA698, 253c(02); E877: NPA638, 3c(98); E895: PRL83, 1295(99). STAR Preliminary

13 Nu Xu13/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Di-electrons: √s NN Dependence 1)Di-lepton: penetrating-bulk probe 2)LMR: no significant energy dependence in enhancement 3)Future: focus in 1 < m ll < 3 GeV/c 2, to - Measure correlated charm contributions - Extract direct radiation information

14 Nu Xu14/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Light hadron collectivity: partonic + hadronic Light hadron collectivity: partonic + hadronic (s, c) hadron collectivity: partonic! (s, c) hadron collectivity: partonic! Di-leptons (m > 1 GeV) collectivity: 1) partonic 2) direct radiation Di-leptons (m > 1 GeV) collectivity: 1) partonic 2) direct radiation √s NN = 200 GeV Au + Au Collisions Future: Partonic Collectivity, Direct Radiation

15 Nu Xu15/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 sQGP and QCD Phase Structure sQGP formed at μ B ~ 0: - Collectivity: NCQ scaling in v 2, … - Jet-quenching, Quarkonia, γ, … RHIC BES-I Program: - Partonic dominant: √s NN > 39 GeV (μ B ≤ 100 MeV) - Hadronic dominant: √s NN ≤ 11.5 GeV (μ B ≥ 300 MeV) What is the structure of the QCD phase diagram? - phase boundary? - QCD critical point? Observations: (1) Azimuthally HBT 1st order phase transition (2) Directed flow v 1 1st order phase transition (3) Dynamical correlations partonic vs. hadronic dof (4) v 2 - NCQ scaling partonic vs. hadronic dof (5) Fluctuations Critical point, correl. length - http://drupal.star.bnl.gov/STAR/starnotes /public/sn0493 - arXiv:1007.2613

16 Nu Xu16/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Medium Effects: Critical Point key words: QGP phase, hadronic phase, 1 st order phase boundary, critical end point, correlation length, critical slowing down...

17 Nu Xu17/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Higher Moments 1) High moments for conserved quantum numbers: Q, S, B, in high-energy nuclear collisions 2)Sensitive to critical point (ξ correlation length): 3)Direct comparison with Lattice results: 4)Extract susceptibilities and freeze-out temperature. An independent/important test on thermal equilibrium in heavy ion collisions. - A. Bazavov et al. 1208.1220 (NLOTE) - STAR Experiment: PRL105, 22303(2010) - M. Stephanov: PRL102, 032301(2009) - R.V. Gavai and S. Gupta, PLB696, 459(2011) - S. Gupta, et al., Science, 332, 1525(2011) - F. Karsch et al, PLB695, 136(2011) - M.Cheng et al, PRD79, 074505(2009) - Y. Hatta, et al, PRL91, 102003(2003) M. Cheng et al, PRD79, 074505(2009) R. Gavai and S. Gupta, QM2012

18 Nu Xu18/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Higher Moment: Net-charge STAR Preliminary - PHENIX: E. O’Brien, QM2012 - STAR: D. McDonald, QM2012 - HRG Model: K. Redlich et al, private communications, 2011

19 Nu Xu19/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 STAR net-proton results: 1)All data show deviations below Poisson beyond statistical and systematic errors in the 0-5% most central collisions for κσ 2 and Sσ at all energies. 2)UrQMD model show monotonic behavior 3)Higher statistics needed for collisions at √s NN < 20 GeV Net-proton Higher Moments STAR Preliminary STAR: X.F. Luo, QM2012

20 Nu Xu20/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 Summary and Outlook 1) Heavy flavor: (a) NMF for HF jets and hadrons  extract transport properties and understand energy loss mechanism (b) Collectivity of HF hadrons  thermalization of the medium 2) Di-lepton: p T, v 2, R AA, polarization  temperature and collectivity of the partonic medium 3) RHIC BES-II/NICA/FAIR at √s NN < 20 GeV  exploring QCD phase diagram, search for the possible critical point, quarkyonic matter 4) small-x (forward-y) physics  exploring the structure of cold nuclear matter, dynamical evolution from the CNM to sQGP LHC/RHIC provides unique opportunities for exploring matter with QCD degrees of freedom!

21 Nu Xu21/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 2 T E RHIC, SPS 3 3 Large μ B NICA, FAIR, CSR 研究 量子色动力学 (QCD) 相结构 1 1 T ini, T C LHC, RHIC 2 Partonic Matter Hadronic Matter LHC+RHIC sQGP properties √s NN ~ few TeV LHC+RHIC sQGP properties √s NN ~ few TeV RHIC BES-II QCD phase structure and critical point √s NN ≤ 20 GeV RHIC BES-II QCD phase structure and critical point √s NN ≤ 20 GeV NICA/FAIR QCD phase structure √s NN ≤ 12 GeV NICA/FAIR QCD phase structure √s NN ≤ 12 GeV Future eRHIC Cold nuclear matter properties e + ion collisions Future eRHIC Cold nuclear matter properties e + ion collisions Emergent properties of QCD matter

22 Nu Xu22/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012

Download ppt "Nu Xu1/20 ”ATHIC2012“, Pusan, Korea, November 14 - 17, 2012 QCD in the Twenty-First Century (1)Higgs (-like) Particle – - Origin of Mass, QCD dof - Standard."

Similar presentations

Explore QCD Emerging Property

Explore QCD Emerging Property
Aug. 10-15, 2005, XXXV ISMD, Czech X.Dong, USTC 1 Open charm production at RHIC Xin Dong University of Science and Technology of China - USTC  Introduction.

Aug , 2005, XXXV ISMD, Czech X.Dong, USTC 1 Open charm production at RHIC Xin Dong University of Science and Technology of China - USTC  Introduction.
First Alice Physics Week, Erice, Dec 4  9, 2005 1 Heavy  Flavor (c,b) Collectivity at RHIC and LHC Kai Schweda, University of Heidelberg A. Dainese,

First Alice Physics Week, Erice, Dec 4  9, Heavy  Flavor (c,b) Collectivity at RHIC and LHC Kai Schweda, University of Heidelberg A. Dainese,
Jet probes of nuclear collisions: From RHIC to LHC Dan Magestro, The Ohio State University Midwest Critical Mass October 21-22, 2005.

Jet probes of nuclear collisions: From RHIC to LHC Dan Magestro, The Ohio State University Midwest Critical Mass October 21-22, 2005.
Nu Xu1/32“Critical Point and Onset of De-confinement”, 23-29 August, 2010, JINR, Dubna High-Energy Nuclear Collisions and the QCD Phase Structure Nu Xu.

Nu Xu1/32“Critical Point and Onset of De-confinement”, August, 2010, JINR, Dubna High-Energy Nuclear Collisions and the QCD Phase Structure Nu Xu.
Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.
DNP03, Tucson, Oct 29, 2003 1 Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.

DNP03, Tucson, Oct 29, Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.
Forward-Backward Correlations in Heavy Ion Collisions Aaron Swindell, Morehouse College REU Cyclotron 2006, Texas A&M University Advisor: Dr. Che-Ming.

Forward-Backward Correlations in Heavy Ion Collisions Aaron Swindell, Morehouse College REU Cyclotron 2006, Texas A&M University Advisor: Dr. Che-Ming.
Nu XuInternational Conference on Strangeness in Quark Matter, UCLA, March 26 - 31, 20061/20 Search for Partonic EoS in High-Energy Nuclear Collisions Nu.

Nu XuInternational Conference on Strangeness in Quark Matter, UCLA, March , 20061/20 Search for Partonic EoS in High-Energy Nuclear Collisions Nu.
5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.

5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.
Heavy Ion Physics in Future -- Dense Matter Physics & Critical Point Search Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory Many Thanks.

Heavy Ion Physics in Future -- Dense Matter Physics & Critical Point Search Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory Many Thanks.
DPG spring meeting, Tübingen, March 2003 1 Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Recent results from STAR at RHIC.

DPG spring meeting, Tübingen, March Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Recent results from STAR at RHIC.
Charmonium Production in Heavy-Ion Collisions Loïc Grandchamp Lawrence Berkeley National Laboratory Texas A&M, Dec. 10 th 2004 w/ R. Rapp.

Charmonium Production in Heavy-Ion Collisions Loïc Grandchamp Lawrence Berkeley National Laboratory Texas A&M, Dec. 10 th 2004 w/ R. Rapp.
Nu Xu1/17STAR Regional Meeting, Warsaw University of Technology, November 5 th, 2012, Warsaw STAR November 5, 2012 Status of STAR Experiment at RHIC Study.

Nu Xu1/17STAR Regional Meeting, Warsaw University of Technology, November 5 th, 2012, Warsaw STAR November 5, 2012 Status of STAR Experiment at RHIC Study.
STAR Physics Program at RHIC Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

STAR Physics Program at RHIC Nu Xu Nuclear Science Division Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
QCD Phase Boundary and the Critical Point B. Mohanty (1), X.F. Luo (2,3), H.G. Ritter (3) and N. Xu (3) (1)VECC, Kolkata, 700064, India (2)Modern Physics.

QCD Phase Boundary and the Critical Point B. Mohanty (1), X.F. Luo (2,3), H.G. Ritter (3) and N. Xu (3) (1)VECC, Kolkata, , India (2)Modern Physics.
ICPAQGP 2010, Goa, India High-Energy Nuclear Collisions and QCD Phase Structure Nu Xu (1) Nuclear Science Division, Lawrence Berkeley National Laboratory,

ICPAQGP 2010, Goa, India High-Energy Nuclear Collisions and QCD Phase Structure Nu Xu (1) Nuclear Science Division, Lawrence Berkeley National Laboratory,
Nu Xu1/17 24 th CBM Collaboration Meeting, Krakow, Poland, September 8 – 12, 2014 Study the QCD Phase Structure at the High Baryon Density Nu Xu (1,2)

Nu Xu1/17 24 th CBM Collaboration Meeting, Krakow, Poland, September 8 – 12, 2014 Study the QCD Phase Structure at the High Baryon Density Nu Xu (1,2)
Nu Xu1/15 STAR Collaboration Meeting, BNL, February 24 – March 1, 2013 February 27, 2013 Status of STAR - A report to the Council Nu Xu.

Nu Xu1/15 STAR Collaboration Meeting, BNL, February 24 – March 1, 2013 February 27, 2013 Status of STAR - A report to the Council Nu Xu.
Nu Xu1/12 ”DNP“, Newport Beach, California, December 24 - 27, 2012 Energy Dependence of the High Moments from Transport Model Simulations Xiaofeng Luo.

Nu Xu1/12 ”DNP“, Newport Beach, California, December , 2012 Energy Dependence of the High Moments from Transport Model Simulations Xiaofeng Luo.

Similar presentations

Ads by Google