Heavy Quark Probes of QCD Matter at RHIC Huan Zhong Huang University of California at Los Angeles ICHEP-2004 Beijing, 2004.

Slides:

Advertisements

Similar presentations

1 Jet Structure of Baryons and Mesons in Nuclear Collisions l Why jets in nuclear collisions? l Initial state l What happens in the nuclear medium? l.

Advertisements

TJH: ISMD 2005, 8/9-15 Kromeriz, Czech Republic TJH: 1 Experimental Results at RHIC T. Hallman Brookhaven National Laboratory ISMD Kromeriz, Czech Republic.

First Alice Physics Week, Erice, Dec 4  9, Heavy  Flavor (c,b) Collectivity at RHIC and LHC Kai Schweda, University of Heidelberg A. Dainese,

ISMD’05, Kromeriz, Aug 09  15, Heavy  Flavor (c,b) Collectivity – Light  Flavor (u,d,s) Thermalization at RHIC Kai Schweda, University of Heidelberg.

Charm & bottom RHIC Shingo Sakai Univ. of California, Los Angeles 1.

Probing Properties of the QCD Medium via Heavy Quark Induced Hadron Correlations Huan Zhong Huang Department of Physics and Astronomy University of California.

AGS-RHIC User’s Workshop -- Heavy Quark Production at RHIC Large Seminar Room, Physics Bldg May 13, 2004 Organizers: Vince Cianciolo, ORNL Huan Zhong Huang,

Hadronization of Dense Partonic Matter Rainer Fries University of Minnesota Talk at SQM 2006 March 28, 2006.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

DNP03, Tucson, Oct 29, Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.

Jet Physics with identified particles at RHIC and the LHC R. Bellwied (Wayne State University) Is hadron production in medium different than in vacuum.

ISMD, Paraty, Brazil, Sep 2  Sep 8, 2006 Kai Schweda 1 D – D Correlations as a Sensitive Probe of Light – quark Thermalization Kai Schweda, University.

03/14/2006WWND2006 at La Jolla1 Identified baryon and meson spectra at intermediate and high p T in 200 GeV Au+Au Collisions Outline: Motivation Intermediate.

1 相对论重离子碰撞中  介子的产生陈金辉中国科学院上海应用物理研究所 QCD 相变与重离子碰撞物理国际暨 2008 年 7 月 10 号 -12 号 Many thanks to: X. Cai, S. Blyth, F. Jin, H. Huang, G. Ma,

Nu XuInternational Conference on Strangeness in Quark Matter, UCLA, March , 20061/20 Search for Partonic EoS in High-Energy Nuclear Collisions Nu.

Jana Bielcikova (Yale University) for the STAR Collaboration 23 rd Winter Workshop on Nuclear Dynamics February 12-18, 2007 Two-particle correlations with.

1 Particle production mechanisms from RHIC to LHC Rene Bellwied Wayne State University 23 rd International Winter Workshop on Nuclear Dynamics, Big Sky.

DPG spring meeting, Tübingen, March Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Recent results from STAR at RHIC.

Interaction between jets and dense medium in heavy-ion collisions Rudolph C. Hwa University of Oregon TsingHua University, Beijing, China May 4, 2009.

RHIC Experimental Status & Future Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles June Shanghai.

Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of.

Strange and Charm Probes of Hadronization of Bulk Matter at RHIC International Symposium on Multi-Particle Dynamics Aug 9-15, 2005 Huan Zhong Huang University.

Recent STAR Results on NPE and Hyperon-Hyperon Correlations Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles,

Jets at RHIC Jiangyong Jia

Identified Particle Ratios at large p T in Au+Au collisions at  s NN = 200 GeV Matthew A. C. Lamont for the STAR Collaboration - Talk Outline - Physics.

Flow and Collective Phenomena in Nucleus-Nucleus Collisions Huan Z Huang Department of Physics and Astronomy University of California, Los Angeles Department.

1 Identified Di-hadron Correlation in Au+Au & PYTHIA Simulation Jiaxu Zuo Shanghai Institute of Applied Physics & BNL CCAST Beijing,

Strong and Electroweak Matter, June 16, 2004 Manuel Calderón de la Barca Sánchez RHIC Collisions The road so far. RHIC Collisions The road so far.

1 Recent Results from RHIC Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles Department of Engineering Physics.

//Talk/2004/11MIT/nxu_mit_26oct04// LNS, November 15, 2004 Nu Xu 1 / 40 Recent Results from STAR at RHIC Nu Xu Lawrence Berkeley National Laboratory X.

Olga Barannikova, UIC Probing the Medium at RHIC by Identified Particles.

1 Strange and Heavy Quark Probes of QCD Matter at RHIC Huan Zhong Huang Department of Physics and Astronomy University of California Los Angeles Weihai,

1 Search for the Effects of the QCD Color Factor in High-Energy Collisions at RHIC Bedanga Mohanty LBNL  Motivation  Color Factors  Search for Color.

Empirical Constraints on Hadronization of Bulk Matter at RHIC International Workshop on QCD and Experiments at RHIC August 9-14, 2004 Beijing, P.R. China.

Opportunities for Exotic Particle Searches in Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles,

1 Evidence for Multi-parton Dynamics in Hadronization of Bulk Partonic Matter at RHIC Huan Zhong Huang ( 黄焕中 ) Department of Physics and Astronomy University.

High Pt physics with TOF ALICE B.V.Zagreev ITEP

Probing Properties of QCD Matter with Strange and Heavy Quarks Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles,

CCAST, Beijing, China, 2004 Nu Xu //Talk/2004/07USTC04/NXU_USTC_8July04// 1 / 26 Collective Expansion in Relativistic Heavy Ion Collisions -- Search for.

HIRSCHEGG, January , 2005 Nu Xu //Talk/2005/01Hirschegg05// 1 / 24 Search for Partonic EoS in High-Energy Collisions Nu Xu Lawrence Berkeley National.

Probing the properties of dense partonic matter at RHIC Y. Akiba (RIKEN) for PHENIX collaboration.

Heavy Quark Probes of Hadronization of Bulk Matter at RHIC Huan Zhong Huang Department of Physics and Astronomy University of California at Los Angeles.

John Harris (Yale) LHC Conference, Vienna, Austria, 15 July 2004 Heavy Ions - Phenomenology and Status LHC Introduction to Rel. Heavy Ion Physics The Relativistic.

Heavy Ions at the LHC Theoretical issues Super-hot QCD matter What have we learned from RHIC & SPS What is different at the LHC ? Goals of HI experiments.

1 Parton Recombination at all p T Rudolph C. Hwa University of Oregon Hard Probes 2004 Ericeira, Portugal, November 2004.

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

Strange Probes of QCD Matter Huan Zhong Huang Department of Physics and Astronomy University of California Los Angeles, CA Oct 6-10, 2008; SQM2008.

Multi-Parton Dynamics at RHIC Huan Zhong Huang Department of Physics and Astronomy University of California Los University Oct

24 Nov 2006 Kentaro MIKI University of Tsukuba “electron / photon flow” Elliptic flow measurement of direct photon in √s NN =200GeV Au+Au collisions at.

1 Probing dense matter at extremely high temperature Rudolph C. Hwa University of Oregon Jiao Tong University, Shanghai, China April 20, 2009.

Jin-Hui Chen Shanghai Institute of Applied Physics, CAS In collaboration with F. Jin, D. Gangadharan, X. Cai, H. Huang and Y. Ma Parton distributions at.

 -jet measurements Table of Contents:  Motivation  Preliminary QA of  -trigger Data  Shower Shape Analysis  Experimental Challenges  Summary  

Xin-Nian Wang/LBNL QCD and Hadronic Physics Beijing, June 16-20, 2005 Xin-Nian Wang 王新年 Lawrence Berkeley National Laboratory Jet Tomography of Strongly.

Intermediate pT results in STAR Camelia Mironov Kent State University 2004 RHIC & AGS Annual Users' Meeting Workshop on Strangeness and Exotica at RHIC.

Production of strange particles at RHIC via quark recombination C.B. Yang Institute of Particle Physics, Wuhan, China Collaborated with Rudolph C. Hwa.

What have we learned from the RHIC experiments so far ? Berndt Mueller (Duke University) KPS Meeting Seoul, 22 April 2005.

Production, energy loss and elliptic flow of heavy quarks at RHIC and LHC Jan Uphoff with O. Fochler, Z. Xu and C. Greiner Hard Probes 2010, Eilat October.

R. Lacey, SUNY Stony Brook 1 Arkadij Taranenko XVIII Baldin ISHEPP September 25-30, JINR Dubna Nuclear Chemistry Group SUNY Stony Brook, USA Scaling Properties.

What do the scaling characteristics of elliptic flow reveal about the properties of the matter at RHIC ? Michael Issah Stony Brook University for the PHENIX.

Duke University 野中千穂 Hadron production in heavy ion collision: Fragmentation and recombination in Collaboration with R. J. Fries (Duke), B. Muller (Duke),

Recontres de Moriond, March

Strange Probes of QCD Matter

Anisotropic flow at RHIC: How unique is the NCQ scaling ?

Experimental Studies of Quark Gluon Plasma at RHIC

Status and Implications of PID measurements at high pT

Many Thanks to Organizers!

Comments on RHIC Results

QGP at RHIC: Seen through Modified Jet Fragmentation

Identified Particle Production at High Transverse Momentum at RHIC

QGP Formation Signals and Quark Recombination Model

Presentation transcript:

Heavy Quark Probes of QCD Matter at RHIC Huan Zhong Huang University of California at Los Angeles ICHEP-2004 Beijing, 2004

Outline 1) Experimental Evidences for Bulk Matter Hadronization 2) Recombination for Heavy Quark Mesons 3) Future Measurements of Heavy Quark Production Features at RHIC

Too Many Baryons at Intermediate p T

Baryon Production from pQCD  K K p p  e + e -  jet fragmentation from SLD Normal Fragmentation Cannot Produce the Large Baryon Yield

Nuclear Modification Factors Use number of binary nucleon-nucleon collisions to gauge the colliding parton flux: N-binary Scaling  R AA or R CP = 1 simple superposition of independent nucleon-nucleon collisions !

Particle Dependence of R CP suppression

STAR PHENIX Particle Dependence of v 2 Baryon Meson Why saturation at intermediate p T ? Why baryon and meson difference ?

Salient Features at Inermediate p T 1)Why so many baryons versus mesons? 2)Why does elliptic v 2 versus p T saturate ? 3)Why R cp and v 2 in two groups: Baryon and Meson ? Hadronization from bulk partonic matter – Constituent quark degrees of freedom Recombination/Coalescence scheme for hadron formation Surface emission

Constituent Quark Degree of Freedom K S – two quark coalescence  – three quark coalescence from the partonic matter surface?! Particle v 2 may be related to quark matter anisotropy !! p T < 1 GeV/c may be affected by hydrodynamic flow ! Hadronization Scheme for Bulk Partonic Matter: Quark Coalescence – (ALCOR-J.Zimanyi et al, AMPT-Lin et al, Rafelski+Danos, Molnar+Voloshin …..) Quark Recombination – (R.J. Fries et al, R. Hwa et al)

Quark Cluster Formation from Strongly Interacting Partonic Matter Volcanic mediate p T – Spatter (clumps)   Strangeness enhancement from QGP is most prominent in the region where particle formation from quark coalescence is dominant !

Multi-Parton Dynamics for Bulk Matter Hadronization Essential difference: Traditional fragmentation  particle properties mostly determined by the leading quark ! Emerging picture from RHIC data (R AA /R CP and v 2 )  all constituent quarks are almost equally important in determining particle properties ! v 2 of hadron comes from v 2 of all constituent quarks ! Are constituent quarks the effective degrees of freedom for bulk partonic matter hadronization ? How do we establish signatures for multi-parton dynamics, recombination model for example, where thermal constituent quarks or shower partons from jet production are both possible ?

Fragmentation vs Recombination Fragmentation Function  z = p hadron /p parton < 1 Recombination Scheme  p hadron = p parton-1 + p parton-2 …  Z >= 1

Fragmentation Functions from e+e Collisions Belle Data

Charm Mesons from Hadronic Collisions Charm meson p T ~ follow the NLO charm quark p T -- add k T kick -- harder fragmentation (  func or recombination scheme)

k T Kick? What about k L ? The x F distribution matches the NLO charm quark x F !

The RHIC D meson p T ~ NLO charm quark too NLO pQCD predictions are provided by R. Vogt, hep-ph/ STAR Preliminary But NLO QCD calculation fits CDF data within a factor of 2 Recombination mechanism for D formation ?!

Recombination  D S /D 0 PYTHIA Prediction Charm quark recombines with a light (u,d,s) quark from a strangeness equilibrated partonic matter  D S /D 0 ~ at intermediate p T !!!

p T Scales and Physical Processes R CP Three P T Regions: -- Fragmentation -- multi-parton dynamics (recombination or coalescence or …) -- Hydrodynamics (constituent quarks ? parton dynamics from gluons to constituent quarks? ) P T scale for heavy quarks?

Summary Formation of Dense Matter Partonic Degrees of Freedom Important Hadronization of Bulk Partonic Matter Heavy Quark Measurement One of the Key Future Critical Test of Multi-parton Dynamics for Hadronization Signature for Deconfinement !

The End

Two Particle Jet-like Correlations Jet-like two particle correlations (e.g., trigger particle 4-6 GeV/c, associated particle 2-4 GeV/c) : These correlations cannot be easily explained in terms of recombination/coalescence scenario ! But 1) the effect of resonances on the two particle correlations has not be adequately addressed 2) trigger biases – with two high p T particles the initial parton is considerably harder than if only one high p T particle is produced. Fragmentation region p T > 5.5 GeV/c 3) low level two particle correlations in the soft region can be accommodated in recombination/coalescence (wave induced correlation?)

Heavy Quark in QCD Medium Heavy Quark energy loss in color medium ! -- dead cone effect (less than light quarks) Charm enhancement from high temperature gluonic matter (T init > 500 MeV)! An Intriguing Scenario ?! PTPT R AA 1.0 Light hadrons Open Charm (p T scale) Require direct open charm measurement !

Geometry of Nucleus-Nucleus Collisions N part – No of participant nucleons N binary – No of binary nucleon-nucleon collisions cannot be directly measured at RHIC estimated from Woods-Saxon geometry

A Critical Test for Recombination Duke Group, PLB 587, 73 (2004) p T Scale !!   And Strange Quark Dynamics in Bulk Matter STAR will make a measurement of  and  v 2 from run-4 Au+Au data !

Elliptic Flow Parameter v 2 y x pypy pxpx coordinate-space-anisotropy  momentum-space-anisotropy Initial/final conditions, dof, EOS

The Field & Feynman picture of cascade fragmentation

Charm and Bulk Matter Does Charm Flow? Thermalization of partonic matter -- charm elliptic flow v 2 ! -- charm hadron chemistry ! Simulation by X. Dong Charm Meson v 2 has to come from light quark v 2 and possibly charm quark v 2 !