STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October 2006 1 1 Two particle azimuthal correlations in Cu+Cu collisions.

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

Quark Matter 2006 ( ) Excitation functions of baryon anomaly and freeze-out properties at RHIC-PHENIX Tatsuya Chujo (University of Tsukuba) for.

K*(892) Resonance Production in Au+Au and Cu+Cu Collisions at  s NN = 200 GeV & 62.4 GeV Motivation Analysis and Results Summary 1 Sadhana Dash Institute.

1 Probing the medium with photons Outline: oMotivation oExperiment oResults oConclusion oIntroduction LBNL Saskia Mioduszewski Ahmed Hamed.

High-p T spectra and correlations from Cu+Cu and Au+Au collisions in STAR Marco van Leeuwen, LBNL for the STAR collaboration.

1 Baryonic Resonance Why resonances and why  * ? How do we search for them ? What did we learn so far? What else can we do in the.

1 High pt particle spectra and correlations of strange particles in pp, dA, and AA in STAR Rene Bellwied Wayne State University (for M.Heinz, J.Adams,

Recent results on strangeness from the STAR experiment Matthew A. C. Lamont, Yale University for the STAR Collaboration Outline Bulk Measurements Outside.

STAR 1 Strange Particle Ratios on the Near- & Away-Side of Jets at RHIC Jiaxu Zuo BNL/SINAP with Paul Sorensen BNL For STAR Collaboration 23rd Winter Workshop.

Source Dynamics from Deuteron and Anti-deuteron Measurements in 200 GeV Au+Au Collisions Hugo E Valle Vanderbilt University (For the PHENIX Collaboration)

Hard Probes at RHIC Saskia Mioduszewski Texas A&M University Winter Workshop on Nuclear Dynamics 8 April, 2008.

WWND 03/13/06 N Grau1 Jet Correlations from PHENIX Focus entirely on A+A collisions High-trigger p T correlations –Can we do jet tomography? Low-trigger.

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

Betty Abelev UI Chicago Testing the Recombination Model at RHIC using multi-strange baryon correlations for the STAR Collaboration 23 rd Winter Workshop.

Jana Bielcikova (Yale University) High-p T physics at LHC, Jyväskylä March 23-27, 2007 Strange particle correlations – coalescence at RHIC and LHC.

12-17 February 2007 Winter Workshop on Nuclear Dynamics STAR identified particle measurements at large transverse momenta in Cu+Cu collisions at RHIC Richard.

High p T identified hadron anisotropic flow and Deuteron production in 200 GeV Au+Au Collisions Shengli Huang Vanderbilt University for the PHENIX Collaboration.

STAR Back-to-Back Di-Jet Triggered Multi-Hadron Correlations as Medium Probes in STAR Back-to-Back Di-Jet Triggered Multi-Hadron Correlations as Medium.

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

Uncertainties in jet event generators due to hadronizaton scheme, Other issues with energy loss on E-by-E hydro, and the extraction of transport coefficients.

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.

QM2006 Shanghai, China 1 High-p T Identified Hadron Production in Au+Au and Cu+Cu Collisions at RHIC-PHENIX Masahiro Konno (Univ. of Tsukuba) for the PHENIX.

QM’05 Budapest, HungaryHiroshi Masui (Univ. of Tsukuba) 1 Anisotropic Flow in  s NN = 200 GeV Cu+Cu and Au+Au collisions at RHIC - PHENIX Hiroshi Masui.

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

D 0 Measurement in Cu+Cu Collisions at √s=200GeV at STAR using the Silicon Inner Tracker (SVT+SSD) Sarah LaPointe Wayne State University For the STAR Collaboration.

Winter Workshop on Nuclear Dynamics Jet studies in STAR via 2+1 correlations Hua Pei For the STAR Collaboration.

N. N. Ajitanand Nuclear Chemistry, SUNY, Stony Brook For the PHENIX Collaboration Two and Three particle Flavor Dependent Correlations Remember the hungarian.

Matter System Size and Energy Dependence of Strangeness Production Sevil Salur Yale University for the STAR Collaboration.

System size dependence of strange particle correlations in Cu+Cu and Au+Au collisions at  s NN = 200 GeV at RHIC Christine Nattrass (Yale University)

STAR Strangeness production and Cronin effect in d+Au collisions at √s NN = 200 GeV in STAR For the STAR Collaboration Xianglei Zhu (Tsinghua U / UCLA)

Detail study of the medium created in Au+Au collisions with high p T probes by the PHENIX experiment at RHIC Takao Sakaguchi Brookhaven National Laboratory.

M. Oldenburg Strange Quark Matter 2006 — March 26–31, Los Angeles, California 1 Centrality Dependence of Azimuthal Anisotropy of Strange Hadrons in 200.

What Can be Learned from Identifying Leading Hadrons of Jets in STAR? Kolja Kauder for the STAR Collaboration.

Jets as a probe of the Quark Gluon Plasma Jets as a probe of the Quark Gluon Plasma Christine Nattrass Yale University Goldhaber Lecture 2008 Christine.

What is the ridge? And why you should care Christine Nattrass University of Tennessee at Knoxville.

1 Nuclear modification and elliptic flow measurements for  mesons at  s NN = 200 GeV d+Au and Au+Au collisions by PHENIX Dipali Pal for the PHENIX collaboration.

1 Away-side Modification and Near-side Ridge Relative to Reaction Plane at 200 GeV Au+Au Collisions 第十届全国粒子物理学术会议（南京） Apr. 28th, 2008 Aoqi Feng, Fuqiang.

System size dependence of azimuthal correlations at RHIC Christine Nattrass Yale University Star Collaboration.

C ONTROL STUDY OF SURFACE BIAS EMISSION IN 2- PARTICLE CORRELATIONS IN A U +A U AT √ S NN = 200 G E V IN PHENIX Eric Vazquez 2012 APS-Division of Nuclear.

Ti Results: Energy and system dependence Conclusions Ridge Jet Figure 1: Sample di-hadron correlation showing the jet-like correlation and the ridge [1]

Jeffery T. Mitchell (BNL) – Quark Matter The Evolution of Correlation Functions from Low to High p T : From HBT to Jets Quark Matter 2005 Jeffery.

Multi-strange Baryon Correlations in p+p and d+Au Collisions at √s NN = 200 GeV Betty Bezverkhny Yale University For the Collaboration Hot Quarks ’04,

Near-side  correlations of high-p t hadrons from STAR Jörn Putschke for the STAR collaboration Lawrence Berkeley National Laboratory Weisshorn (4505m),

1 What we know about the Ridge Christine Nattrass Yale University.

Hadronic resonance production in Pb+Pb collisions from the ALICE experiment Anders Knospe on behalf of the ALICE Collaboration The University of Texas.

2008/04/12APS April Meeting 1 Decomposition of Awayside Components of Dijet Correlation in Au+Au Collisions at √S NN = 200 GeV at PHENIX Chin-Hao Chen.

Diagnosing energy loss: PHENIX results on high-p T hadron spectra Baldo Sahlmüller, University of Münster for the PHENIX collaboration.

Jets as a probe of the Quark Gluon Plasma Christine Nattrass University of Tennessee at Knoxville.

Jet Production in Au+Au Collisions at STAR Alexander Schmah for the STAR Collaboration Lawrence Berkeley National Lab Hard Probes 2015 in Montreal/Canada.

Jana Bielcikova (Yale)ISMD 2007, Berkeley1 Near-side di-hadron correlations at RHIC Jana Bielcikova (Yale University)

Toward a  +Jet Measurement in STAR Saskia Mioduszewski, for the STAR Collaboration Texas A&M University 1.

Strange hadrons and resonances at LHC energies with the ALICE detector INPC 2013 Firenze, Italy 2 -7 June 2013 A. Badalà (INFN Sezione di Catania) for.

What can we learn from high-p T azimuthal correlations of neutral strange baryons and mesons at RHIC ? Jana Bielcikova (Yale University) for the STAR Collaboration.

Is there a strange baryon/meson dependence in correlations in STAR? Marek Bombara for the STAR Collaboration (University of Birmingham) Strangeness in.

The near-side in STAR Christine Nattrass (Yale University) for the STAR Collaboration.

What we know about the Ridge

System size dependence of azimuthal correlations at RHIC Christine Nattrass Yale University Star Collaboration.

As a probe of the quark gluon plasma

Outline Motivation Analysis technique Results Conclusions.

High-pT Identified Hadron Production in Au+Au and Cu+Cu Collisions

PHENIX Measurement on High pT h-h and g-h Azimuthal Correlations

Jets as a probe of the Quark Gluon Plasma

Strangeness Production in Heavy-Ion Collisions at STAR

Introduction and analysis method

STAR Analysis Meeting - BNL

High-pT Identified Charged Hadrons in √sNN = 200 GeV Au+Au Collisions

Identified Charged Hadron

Hiroshi Masui for the PHENIX collaboration August 5, 2005

Identified Charged Hadron Production at High pT

Presentation transcript:

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Two particle azimuthal correlations in Cu+Cu collisions at  s NN = 200 GeV at RHIC Christine Nattrass (STAR collaboration) Yale University

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Outline Motivation Analysis technique Results Conclusions

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Motivation – Jets as a probe of the medium Hard parton scattering => back-to- back jets Good probes of medium produced at RHIC High multiplicity in A+A events Individual jets cannot be identified Jets have been studied using azimuthal correlations STAR, PRL 91 (2003)

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Motivation – particle identification in jets Particle identification: Particle/antiparticle differences Quark vs gluon jets Meson/baryon differences Coalescence/ recombination mechanisms Observed in particle ratios Testable with identified particle correlations? Parton Parton Hadrons Hadrons L,  L, K 0 S...?

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Motivation - Long-range pseudorapidity correlations Long-range pseudorapidity (  ) correlations observed by STAR in Au+Au Near side jet peak sits on plateau (Ridge) Significant contribution to the near-side yield Look for particle, system size dependencies which might reveal production mechanism

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Identification of strange particles V 0 identification Reconstruction decay vertices Identification out to high p T Pure samples V 0 s used for triggers VoVo K 0 S : m K0s =.498 GeV, c  = 2.68 cm K 0 S   + +  - (~69%) K 0 S   + +  - (~69%)   m  = GeV, c  = 7.89 cm    - + p (~64%)   m   = GeV, c  = 7.89 cm    + +  p (~64%)  STAR Preliminary  STAR Preliminary K0SK0SK0SK0S STAR Preliminary

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Results Within errors, no significant difference between Meson and baryon Particle and antiparticle  s NN = 200 GeV 3.0 < p T trigger < < p T assoc < p T trigger -1 <  < 1 reflected reflected reflectedreflected Central Peripheral particle/anti-particle baryon/meson

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Background subtraction Background (combinatorial + flow) B(1+2v 2(trigger) v 2(assoc) cos(2  ) ) Sources of systematic error : Different methods: Fit Assume zero yield at minimum (ZYAM) Use one bin for minimum Use a few bins for minimum Error in v 2 Used v 2 {CuCu-pp} Systematic and random errors in v 2 v 2 larger in peripheral collisions 20-30% systematic error in near-side yields 0

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Results – Near-side yields ZYAM (3 points) used No strong particle type dependence Systematic errors may be particle type dependent Yield rises with p T trigger

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Results - Comparison to Au+Au Cu+Cu similar to Au+Au Yield increases with p T trigger No significant particle type dependence Significant ridge yield in Au+Au Investigations of Ridge vs Jet yield in Cu+Cu necessary

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Results - Comparison to Au+Au Yields in Cu+Cu consistent with Au+Au at similar N part Cu+Cu can be used for studying jet and ridge yield at low N part STAR preliminary near-side Cu+Cu 0-10%

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Conclusions Near-side yield trends similar to Au+Au Yield rises with p T trigger Yield is dependent on N part No significant difference between Meson /baryon triggers Particle /antiparticle triggers Ridge is a major contribution to near-side yield in Au+Au Ridge contribution in Cu+Cu needs to be investigated

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Work to come...  -  correlations in Cu+Cu Jet vs Ridge yield comparisons V 0 associated particles (unidentified triggers) in Cu+Cu Study composition of ridge Multistrange trigger particles (  +,  -,  +,  - ) in Cu+Cu Test recombination model V 0 -V 0 correlations? See Jana Bielcikova and Jörn Putschke's talks at Quark Matter!

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October Backup slides

STAR Christine Nattrass (STAR Collaboration), Yale University DNP, Nashville, 28 October