Presentation is loading. Please wait.

Presentation is loading. Please wait.

Heavy Ion Physics at RHIC: Expeprimental Status & outlook

Published byLouise Pope Modified over 5 years ago

Similar presentations

Presentation on theme: "Heavy Ion Physics at RHIC: Expeprimental Status & outlook"— Presentation transcript:

1 Heavy Ion Physics at RHIC: Expeprimental Status & outlook
Stefan Bathe, Future Directions of High Energy QCD

2 History of the Universe
Time few ms after Big Bang Energy density e ~ 1 GeV/fm3 QGP Temperature: T=170 MeV Stefan Bathe Graduate Lecture 09/23/2011

3 Exploring the QCD Phase Diagram
How to explore the QCD phase diagram experimentally? Collide heaviest nuclei at highest energies Stefan Bathe, Heavy Ion Physics at RHIC

4 Exploring the QCD Phase Diagram
How to explore the QCD phase diagram experimentally? Collide heaviest nuclei at highest energies RHIC’s original mission: - Find QGP phase transition - Established Now: - understand QGP properties quantitatively Stefan Bathe, Heavy Ion Physics at RHIC

5 Baseline And Control Systematic Approach p+p: baseline d+A: control
Au+Au: new effects p+p d+Au Au+Au Stefan Bathe, Heavy Ion Physics at RHIC time

6 Energy Density: a Pre-requisite
from dET/dh measurement PHENIX PRC71 (2005) Participants Spectators

7 Energy Density: a Pre-requisite
from dET/dh measurement PHENIX PRC71 (2005) - e >> ec - Hadronic picture difficult to maintain Participants Spectators

8 RHIC’s Two Major Discoveries: 1
PHENIX PRL88,022301(2002) High pT suppression Energy loss of quark/gluon Very dense matter Stefan Bathe, Heavy Ion Physics at RHIC

9 Elliptic Flow  Elliptic Flow
x z y Non Central collision Reaction Plane Reaction Plane High density matter Beam view of the reaction In non-central collisions, high density matter with elliptic shape is formed Expansion towards reaction plane  Elliptic Flow Stefan Bathe, Heavy Ion Physics at RHIC

10 RHIC’s Two Major Discoveries: 2
STAR PRL86,402 (2001) Strong Elliptic flow Agrees with ideal hydrodynamics Low viscosity/entropy (h/s) Stefan Bathe, Heavy Ion Physics at RHIC

11 Strongly vs. weakly coupled
strongly-coupled small h/s weakly-coupled large h/s Stefan Bathe, Heavy Ion Physics at RHIC

12 (Almost) Perfect Fluid
v2 data indicates that matter has very small h/s ~ 0.1 < 1/10 that of any known matter close to conjectured lower bound of 1/4p: AdS/CFT Kovtun, Son, Starinets PRL 94 (2005) ) RHIC matter 1012 0C

13 (Almost) Perfect Fluid
v2 data indicates that matter has very small h/s ~ 0.1 < 1/10 that of any known matter close to conjectured lower bound of 1/4p: AdS/CFT Kovtun, Son, Starinets PRL 94 (2005) ) RHIC matter 1012 0C h/s ≈ 1/4 Connections to fields outside of NP

14 sQGP Paradigm sQGP: strongly-coupled QGP as opposed to weakly-coupled
i.e. nearly perfect fluid (ideal hydrodynamics) as opposed to weakly-coupled deconfined state predicted before RHIC program Stefan Bathe, Heavy Ion Physics at RHIC

15 Space-Time Evolution of HI Collision
hadronization quark-gluon fluid: hydrodynamic evolution rapid thermalization high initial energy density Figure from PHENIX Decadal Plan Stefan Bathe, Heavy Ion Physics at RHIC

16 sQGP I/O success of hydrodynamics  single physics scenario
 reconciles inputs (theoretical and experimental) with outputs (predictions vs. observations) PHENIX Decadal Plan, 2010 Stefan Bathe, Heavy Ion Physics at RHIC

17 Puzzles & Recent Progress
Stefan Bathe, Heavy Ion Physics at RHIC

18 Temperature from Direct Photons
Direct photon excess in Au+Au above p+p spectrum Exponential (consistent with thermal) Inverse slope = 220 ± 20 MeV Ti from hydro MeV Depending on thermalization time NLO Vogelsang √sNN = 200 GeV Au+Au min. bias yield Hydro success Local equilibrium Thermal (em) radiation -> direct photons Experimentally challenging decay photons E resolution of EMCal Hadronic contamination Solution p+p PRL 104, (2010) *Hagedorn Nuovo Cim. Suppl. 3 (1965) 147

19 Temperature from Direct Photons
Direct photon excess in Au+Au above p+p spectrum Exponential (consistent with thermal) Inverse slope = 220 ± 20 MeV Ti from hydro MeV Depending on thermalization time NLO Vogelsang √sNN = 200 GeV Au+Au min. bias yield Hydro success Local equilibrium Thermal (em) radiation -> direct photons Experimentally challenging decay photons E resolution of EMCal Hadronic contamination Solution p+p T >> THagedorn = 170 MeV * (from hadronic resonance gas) Hadronic picture difficult to maintain PRL 104, (2010) *Hagedorn Nuovo Cim. Suppl. 3 (1965) 147

20 Jet Quenching: Single Particles
Enhancement seen previously Strong suppression of light quarks Expected from radiative (gluon) E loss pT PHENIX, J.Phys. G35 (2008)

21 Jet Quenching: Single Particles
Enhancement seen previously Direct photons not suppressed No depletion of partons in initial state Strong suppression of light quarks Expected from radiative (gluon) E loss pT PHENIX, J.Phys. G35 (2008)

22 Jet Quenching: Single Particles
Enhancement seen previously Direct photons not suppressed No depletion of partons in initial state Significant suppression of light quarks (single non-photonic electrons) Unxpected Collisional E loss? AdS/CFT? Gyulassi, Physics 2 (2009) 107 Strong suppression of light quarks Expected from radiative (gluon) E loss pT PHENIX, J.Phys. G35 (2008)

23 Jet Quenching: Single Particles
Enhancement seen previously Direct photons not suppressed No depletion of partons in initial state Significant suppression of light quarks (single non-photonic electrons) Unxpected Collisional E loss? AdS/CFT? Gyulassi, Physics 2 (2009) 107 Strong suppression of light quarks Expected from radiative (gluon) E loss pT PHENIX, J.Phys. G35 (2008) Needed: Measure c, b quarks separately  VTX detector

24 Heavy Quark RAA Projected data by 2015 PHENIX PRCC.84 (2011) 044905
Sensitive to diffusion coefficient, D (related to h/s) elastic collisions only Needed: Measure c, b quarks separately  VTX detector

25 2-Particle Correlations, moderate pT
Double hump on away-side Two scenarios 1: Mach cone (both pQCD, AdS/CFT) Chesler, Yaffe, PRL99 (2007)152001 2: initial state fluctuations, triangular component Alver, Roland, PRC81 (2010) Sorensen, J.Phys.G G37 (2010) PHENIX Decadal Plan, 2010 Stefan Bathe, Heavy Ion Physics at RHIC

26 2-Particle Correlations, moderate pT
Double hump on away-side Two scenarios 1: Mach cone (both pQCD, AdS/CFT) Chesler, Yaffe, PRL99 (2007)152001 2: initial state fluctuations, triangular component Alver, Roland, PRC81 (2010) Sorensen, J.Phys.G G37 (2010) PHENIX Decadal Plan, 2010 Stefan Bathe, Heavy Ion Physics at RHIC

27 v3 measured central: v3 = v2 arXiv:1105.3928
Stefan Bathe, Heavy Ion Physics at RHIC

28 v3 measured weak centrality dependence of v3 => fluctuations origin
arXiv: arXiv: central: v3 = v2 mid-central: v3 < v2 weak centrality dependence of v3 => fluctuations origin Stefan Bathe, Heavy Ion Physics at RHIC

29 v3 disentangles initial state and /s
v2 described by Glauber and CGC Theory calculation: Alver et al. PRC82,034913   arXiv: Glauber Glauber initial state /s = 1/4p KLN CGC initial state /s = 2/4p Two models Stefan Bathe, Heavy Ion Physics at RHIC

30 v3 disentangles initial state and /s
v2 described by Glauber and CGC v3 described only by Glauber Theory calculation: Alver et al. PRC82,034913   arXiv: arXiv: Theory calculation: Alver et al. PRC82,034913   Lappi, Venugopalan, PRC74, Drescher, Nara, PRC76, Glauber Glauber initial state /s = 1/4p MC-KLN CGC initial state /s = 2/4p Two models Stefan Bathe, Heavy Ion Physics at RHIC

31 v3 disentangles initial state and /s
v2 described by Glauber and CGC v3 described only by Glauber Theory calculation: Alver et al. PRC82,034913   arXiv: arXiv: Theory calculation: Alver et al. PRC82,034913   favored Lappi, Venugopalan, PRC74, Drescher, Nara, PRC76, Glauber Glauber initial state /s = 1/4p MC-KLN CGC initial state /s = 2/4p Two models CGC not excluded Details of MC implementation matter

32 Quarkonia J/ψ suppression almost same at all energies
Stronger at forward rapidity! - Regeneration? STAR PHENIX STAR preliminary But: flow very small at RHIC - Regeneration dead? Strong CNM effects for Upsilon too Upsilon suppression at RHIC & LHC similar CNM measurements needed FVTX upgrade 32

33 Outlook Stefan Bathe, Heavy Ion Physics at RHIC

34 Near-Term Future: Silicon Vertex Detector
VTX successfully took data in 2011 Au+Au run RAA of c, b separately v2 of c, b separately Jet tomography (di-hadron, g-h, c-h, c-c) Status Data: GeV, 2011 beam profile s ~ 100mm Physics - Stefan Bathe, Heavy Ion Physics at RHIC

35 sPHENIX Physics Question and Needs
Stefan Bathe, Heavy Ion Physics at RHIC

36 sPHENIX/ePHENIX Stefan Bathe, Heavy Ion Physics at RHIC

37 Measuring the Properties of the QGP
Conditions Properties  ~ 0 Screening length Ti = MeV /s(1—3)x1/4p CNM effects non-linear shadowing low-x suppression anti-shadowing? dE/dx  l3 Initial State not MC-KLN Stefan Bathe for PHENIX, QM2011

Download ppt "Heavy Ion Physics at RHIC: Expeprimental Status & outlook"

Similar presentations

Supported by DOE 11/22/2011 QGP viscosity at RHIC and LHC energies 1 Huichao Song 宋慧超 Seminar at the Interdisciplinary Center for Theoretical Study, USTC.

Supported by DOE 11/22/2011 QGP viscosity at RHIC and LHC energies 1 Huichao Song 宋慧超 Seminar at the Interdisciplinary Center for Theoretical Study, USTC.
Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurements by Weak-Decayed Electrons at RHIC-PHENIX.

Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurements by Weak-Decayed Electrons at RHIC-PHENIX.
Charm & bottom RHIC Shingo Sakai Univ. of California, Los Angeles 1.

Charm & bottom RHIC Shingo Sakai Univ. of California, Los Angeles 1.
Julia VelkovskaMoriond QCD, March 27, 2015 Geometry and Collective Behavior in Small Systems from PHENIX Julia Velkovska for the PHENIX Collaboration Moriond.

Julia VelkovskaMoriond QCD, March 27, 2015 Geometry and Collective Behavior in Small Systems from PHENIX Julia Velkovska for the PHENIX Collaboration Moriond.
ICPAQGP, Kolkata, February 2-6, 2015 Itzhak Tserruya PHENIX highlights.

ICPAQGP, Kolkata, February 2-6, 2015 Itzhak Tserruya PHENIX highlights.
Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.
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.
Highlight of PHENIX Results Shengli Huang Vanderbilt University Initial Stages 2014.

Highlight of PHENIX Results Shengli Huang Vanderbilt University Initial Stages 2014.
Interaction between jets and dense medium in heavy-ion collisions Rudolph C. Hwa University of Oregon TsingHua University, Beijing, China May 4, 2009.

Interaction between jets and dense medium in heavy-ion collisions Rudolph C. Hwa University of Oregon TsingHua University, Beijing, China May 4, 2009.
Sourav Tarafdar Banaras Hindu University For the PHENIX Collaboration Hard Probes 2012 Measurement of electrons from Heavy Quarks at PHENIX.

Sourav Tarafdar Banaras Hindu University For the PHENIX Collaboration Hard Probes 2012 Measurement of electrons from Heavy Quarks at PHENIX.
RHIC R.K. CHOUDHURY BARC. Relativistic Heavy Ion Collider at Brookhaven National Laboratory (BNL), USA World’s First Heavy Ion Collider became.

RHIC R.K. CHOUDHURY BARC. Relativistic Heavy Ion Collider at Brookhaven National Laboratory (BNL), USA World’s First Heavy Ion Collider became.
Forward Spectrometer Upgrade LOI pp, pA and AA physics Richard Seto BNL – EC/DC upgrades meeting May 5, 2005.

Forward Spectrometer Upgrade LOI pp, pA and AA physics Richard Seto BNL – EC/DC upgrades meeting May 5, 2005.
Direct photon at RHIC-PHENIX Kensuke Okada (RBRC) For the PHENIX collaboration Rencontres de Moriond March 13, 2012 3/13/20121K.Okada.

Direct photon at RHIC-PHENIX Kensuke Okada (RBRC) For the PHENIX collaboration Rencontres de Moriond March 13, /13/20121K.Okada.
PHENIX Heavy-Flavor Results Matt Snowball (LANL) on behalf of the PHENIX collaboration Hard Probes 2015.

PHENIX Heavy-Flavor Results Matt Snowball (LANL) on behalf of the PHENIX collaboration Hard Probes 2015.
Precision Probes for Hot QCD Matter Rainer Fries Texas A&M University & RIKEN BNL QCD Workshop, Washington DC December 15, 2006.

Precision Probes for Hot QCD Matter Rainer Fries Texas A&M University & RIKEN BNL QCD Workshop, Washington DC December 15, 2006.
Langevin + Hydrodynamics Approach to Heavy Quark Diffusion in the QGP Yukinao Akamatsu Tetsuo Hatsuda Tetsufumi Hirano (Univ. of Tokyo) 1 2009/05/09 Heavy.

Langevin + Hydrodynamics Approach to Heavy Quark Diffusion in the QGP Yukinao Akamatsu Tetsuo Hatsuda Tetsufumi Hirano (Univ. of Tokyo) /05/09 Heavy.
ENHANCED DIRECT PHOTON PRODUCTION IN 200 GEV AU+AU IN PHENIX Stefan Bathe for PHENIX, WWND 2009.

ENHANCED DIRECT PHOTON PRODUCTION IN 200 GEV AU+AU IN PHENIX Stefan Bathe for PHENIX, WWND 2009.
Aug. 4-9, 2005, QM2005, Budapest X.Dong, USTC 1 Open charm production at RHIC Xin Dong University of Science and Technology of China - USTC.

Aug. 4-9, 2005, QM2005, Budapest X.Dong, USTC 1 Open charm production at RHIC Xin Dong University of Science and Technology of China - USTC.
1 Jeffery T. Mitchell – Quark Matter 2012 - 8/17/12 The RHIC Beam Energy Scan Program: Results from the PHENIX Experiment Jeffery T. Mitchell Brookhaven.

1 Jeffery T. Mitchell – Quark Matter /17/12 The RHIC Beam Energy Scan Program: Results from the PHENIX Experiment Jeffery T. Mitchell Brookhaven.
1 Highlights of RHIC Results Ju Hwan Kang Yonsei University 2008 APCTP Workshop on Nuclear Physics in Science Business Belt: Future Heavy Ion Accelerator.

1 Highlights of RHIC Results Ju Hwan Kang Yonsei University 2008 APCTP Workshop on "Nuclear Physics in Science Business Belt: Future Heavy Ion Accelerator.

Similar presentations

Ads by Google