PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 1 Nuclear Physics Institute Academy of Sciences of the Czech Republic Róbert.

Slides:



Advertisements
Similar presentations
Fate of the Weakly-Bound ψ (2s) in Nuclear Matter J. Matthew Durham
Advertisements

Zimányi 14, 12/02/2014Quarkonia at STAR, R. Vértesi Zimányi WINTER SCHOOL ON HEAVY ION PHYSICS Dec Dec. 5., Budapest, Hungary Production of.
Charm & bottom RHIC Shingo Sakai Univ. of California, Los Angeles 1.
Heavy flavor production in sqrt(s NN )=200 GeV d+Au Collisions at PHENIX DNP 2013 Matthew Wysocki, Oak Ridge National Lab Newport News, Virginia, Oct 25,
Direct virtual photon production in Au+Au collision at 200 GeV at STAR Bingchu Huang for the STAR collaboration Brookhaven National Laboratory Aug
Bingchu Huang, USTC/BNL 1 Bingchu Huang (for STAR Collaboration) University of Science and Technology of China (USTC) Brookhaven National Laboratory (BNL)
Upsilon Production in Heavy Ions with STAR and CMS
Quarkonia Production in p+p, d+Au and A+A from PHENIX Melynda Brooks Los Alamos National Laboratory For the PHENIX Collaboration Melynda Brooks, LANL,
Strangeness production in STAR Jun Takahashi for the STAR collaboration.
 production in p+p collisions in Manuel Calderón de la Barca Sánchez UC Davis STAR Collaboration 23 d Winter Workshop on Nuclear Dynamics Big Sky, Montana.
 (  ->ee) production in d+Au collisions at STAR Haidong Liu For the Collaboration.
Upsilon production in STAR Pibero Djawotho Indiana University Cyclotron Facility October 12, 2007 DNP 2007.
 production in d+Au collisions at STAR Haidong Liu University of California, Davis For the STAR Collaboration.
J/ ψ and Υ measurements in Mauro R. Cosentino for the STAR Collaboration Universidade de São Paulo 1 24 th Winter Workshop, South Padre, TX.
Non-photonic electron production in STAR A. G. Knospe Yale University 9 April 2008.
SQM2006, 03/27/2006Haibin Zhang1 Heavy Flavor Measurements at STAR Haibin Zhang Brookhaven National Laboratory for the STAR Collaboration.
Sourav Tarafdar Banaras Hindu University For the PHENIX Collaboration Hard Probes 2012 Measurement of electrons from Heavy Quarks at PHENIX.
Hard Probes ‘15STAR Bottomonia – R. Vértesi 1 Bottomonium production in heavy ion collisions at STAR Nuclear Physics Institute Academy of Sciences of the.
1 The Study of D and B Meson Semi- leptonic Decay Contributions to the Non-photonic Electrons Xiaoyan Lin CCNU, China/UCLA for the STAR Collaboration 22.
Lake Louise 2006 Jaroslav Bielcik, Yale/BNL 1  Motivation  STAR and electron ID  Analysis  Results: p+p, d+Au, and Au+Au at  s NN = 200 GeV  Summary.
PHENIX Heavy-Flavor Results Matt Snowball (LANL) on behalf of the PHENIX collaboration Hard Probes 2015.
Measurement of J/ψ production in p+p collisions at √s = 500 GeV at STAR experiment Rongrong Ma (BNL) Hard Probes 2015 McGill University, Montreal, Canada.
Measurements of  Production and Nuclear Modification Factor at STAR Anthony Kesich University of California, Davis STAR Collaboration.
Jaroslav Bielčík for the STAR collaboration Czech Technical University in Prague The 6-th International Conference on Hard and Electromagnetic Probes of.
☍ Heavy Quarkonium in Heavy Ion Collisions  ϒ production  pp, dAu, AuAu collisions  Nuclear Modification  Comparison to models  Questions from trends.
QM2005 BudapestJaroslav Bielcik  Motivation  STAR and electron ID  Analysis  Results: p+p, d+Au, and Au+Au at  s NN = 200 GeV  Summary Centrality.
 production in p+p and Au+Au collisions in STAR Debasish Das UC Davis (For the STAR Collaboration)‏
STAR The Centrality Dependence of Strange Baryon and Meson Production in Cu+Cu and Au+Au with √s NN = 200 GeV Anthony Timmins for the STAR Collaboration.
 0 (1530) in  s NN =200 GeV Au+Au Collisions in STAR Richard Witt for the STAR collaboration Motivation Data Set Analysis Technique Results Comparisons.
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)
Kwangbok Lee, LANL for the PHENIX collaboration DIS 2011, Newport News, VA Heavy vector meson results at PHENIX 1.
☍ Studying bottmonium in hot/cold QGP medium. ☍ Triggering on ϒ production in STAR ☍ Baseline measurement: ϒ cross section in pp collisions. ☍ ϒ and CNM.
Heavy flavor results from PHENIX at RHIC Raphaël Granier de Cassagnac on behalf of the PHENIX collaboration LLR – École polytechnique / IN2P3 Deep Inelastic.
Open charm hadron production via hadronic decays at STAR
J/Ψ PRODUCTION IN A+A COLLISIONS AT STAR Ota Kukral for the STAR Collaboration Czech Technical University in Prague RHIC & AGS Annual Users’ Meeting 17.
Properties of particle production at large transverse momentum in Au+Au and Cu+Cu collisions at RHIC Outline Motivation Measurement ( ,p,pbar) Energy.
Peak extraction Because of scarcity of statistics, the peak parameters are fixed from embedded MC. The relative suppression of the excited states is taken.
D. Kikola, ICHEP Heavy quarkonia production at STAR Daniel Kikoła for the STAR collaboration Warsaw University of Technology/ Warsaw University of.
Recent Charm Measurements through Hadronic Decay Channels with STAR at RHIC in 200 GeV Cu+Cu Collisions Stephen Baumgart for the STAR Collaboration, Yale.
Quarkonium Physics with STAR Mauro Cosentino (University of Sao Paulo/BNL)
Measurement of J/  -> e + e - and  C -> J/  +   in dAu collisions at PHENIX/RHIC A. Lebedev, ISU 1 Fall 2003 DNP Meeting Alexandre Lebedev, Iowa State.
Quarkonia R dAu and FVTX c/b measurement at PHENIX Kwangbok Lee Los Alamos National Laboratory 1 WWND2013.
M. Muniruzzaman University of California Riverside For PHENIX Collaboration Reconstruction of  Mesons in K + K - Channel for Au-Au Collisions at  s NN.
Jaroslav Bielčík for STAR collaboration Czech Technical University in Prague XXI. International Workshop on Deep-Inelastic Scattering and Related Subjects.
Ralf Averbeck Stony Brook University Hot Quarks 2004 Taos, New Mexico, July 19-24, 2004 for the Collaboration Open Heavy Flavor Measurements with PHENIX.
System size dependence of azimuthal correlations at RHIC Christine Nattrass Yale University Star Collaboration.
Non-photonic electron production in p+p collisions at √s=200 GeV Xiaozhi Bai for the STAR collaboration Central China Normal University University of Illinois.
ϒ measurements in p+p collisions at √s = 500 GeV with the STAR experiment Leszek Kosarzewski, for the STAR Collaboration Warsaw University of Technology,
1 Energy and system size dependence of strangeness production, from SPS to RHIC Jun Takahashi & Marcelo Munhoz for the STAR collaboration.
Study of b quark contributions to non-photonic electron yields by azimuthal angular correlations between non-photonic electrons and hadrons Shingo Sakai.
Yichun Xu (USTC/BNL)April 27-29, Hangzhou, CHINA1 Measurements of identified meson and baryon production at high p T in p+p and Au+Au collisions at STAR.
B. Kim, International Workshop on Heavy Quark Production in HIC 1 Byungil Kim For the PHENIX Collaboration International Workshop on Heavy Quark Production.
 Production and Suppression in Heavy Ion Collisions at STAR Anthony Kesich University of California, Davis STAR Collaboration February 5, 2013.
Quarkonia Measurement Updates from PHENIX Cesar Luiz da Silva Los Alamos National Lab for the PHENIX Collaboration.
1 Guannan Xie Nuclear Modification Factor of D 0 Mesons in Au+Au Collisions at √s NN = 200 GeV Lawrence Berkeley National Laboratory University of Science.
PHENIX results on J/  production in Au+Au and Cu+Cu collisions at  S NN =200 GeV Hugo Pereira Da Costa CEA Saclay, for the PHENIX collaboration Quark.
2010/04/18Yichun Measurements of identified hadron production at high p T in p+p and Au+Au collisions at RHIC-STAR 许依春 (Yichun Xu)
J/  production in Cu+Cu and Au+Au collisions at RHIC-PHENIX Susumu X. Oda for the PHENIX collaboration CNS, University of Tokyo February 9 (Sat.), 2008,
QM2005 BudapestJaroslav Bielcik  Motivation  STAR and electron ID  Analysis  Results: p+p, d+Au, and Au+Au at  s NN = 200 GeV  Summary Centrality.
Bottonium Measurements at Midrapidity at the STAR Experiment Lake Louise Winter Institute Feb Ahmed Hamed (Texas A&M University) 1 Ahmed.
Heavy Flavor Physics in STAR Flemming Videbæk Brookhaven National Laboratory For the STAR collaboration.
ECT* Heavy Quarks ‘15Quarkonia in STAR, R. Vértesi 1 Production of Quarkonia in Heavy Ion Collisions at STAR Nuclear Physics Institute Academy of Sciences.
Heavy Flavor Measurements at RHIC&LHC W. Xie (Purdue University, West Lafayette) W. Xie (Purdue University, West Lafayette) Open Heavy Flavor Workshop.
Review on experimental results on quarkonium production Javier Castillo CEA Saclay – Irfu/SPhN 1 1st SaporeGravis Day Meeting - IPN Orsay – 23/11/2012.
J. Zhao Hard Probe 2012, Cagliari 1, Lawrence Berkeley National Lab, USA 2, Shanghai Institution of Applied Physics, CAS, China Di-electron Production.
PHENIX J/  Measurements at  s = 200A GeV Wei Xie UC. RiverSide For PHENIX Collaboration.
1 Energy and system size dependence of strangeness production, from SPS to RHIC Jun Takahashi & Marcelo Munhoz for the STAR collaboration.
Non-Prompt J/ψ Measurements at STAR Zaochen Ye for the STAR Collaboration University of Illinois at Chicago The STAR Collaboration:
System size dependence of azimuthal correlations at RHIC Christine Nattrass Yale University Star Collaboration.
Recent Results of Quarkonia Production at CMS
Presentation transcript:

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 1 Nuclear Physics Institute Academy of Sciences of the Czech Republic Róbert Vértesi for the STAR collaboration.  production at the STAR experiment with a focus on new U+U results STAR

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 2  Quarkonia in heavy ion collisions  measurements with the STAR experiment  Results (√s NN = GeV, mid-rapidity)  p+p  pQCD baseline  d+Au  CNM effects  Au+Au and U+U  sQGP modification  Outlook  New high-statistics measurements, √s=500 GeV p+p  Muon Telescope Detector (MTD) Outline

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 3 Quarkonia in the sQGP  Debye screening of heavy quark potential  Quarkonium states are expected to dissociate T. Matsui, H. Satz, Phys.Lett. B178, 416 (1986) Charmonia: J/Ψ, Ψ’, χ c Bottomonia:  (1S),  (2S),  (3S),χ B

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 4 Quarkonia in the sQGP  Debye screening of heavy quark potential  Quarkonium states are expected to dissociate T. Matsui, H. Satz, Phys.Lett. B178, 416 (1986)  Sequential melting: Different states are expected to melt at different temperatures Á. Mócsy, P. Petreczky, Phys. Rev. D77, (2008) Quarkonia may serve as sQGP thermometer Charmonia: J/Ψ, Ψ’, χ c Bottomonia:  (1S),  (2S),  (3S),χ B

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 5  measurements at RHIC  J/ψ yield is strongly affected by recombination, feed-down, co-mover absorption Model: R. Rapp et al., Prog.Part.Nucl.Phys. 65 (2010) 209 Data: PHENIX, Nucl.Phys. A 774 (2006) 747  P. Chaloupka’s talk

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 6  measurements at RHIC  J/ψ yield is strongly affected by recombination, feed-down, co-mover absorption  recombination and co-mover absorption are negligible at RHIC energies  However: Low production rate makes it a difficult measurement Requires good acceptance and specific triggering  states provide a cleaner probe at RHIC  P. Chaloupka’s talk Model: R. Rapp et al., Prog.Part.Nucl.Phys. 65 (2010) 209 Data: PHENIX, Nucl.Phys. A 774 (2006) 747

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 7 U+U: Higher energy densities STAR preliminary RHIC √s NN =193 GeV U+U data (2012)  Reach higher N part than in Au+Au

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 8 U+U: Higher energy densities RHIC √s NN =193 GeV U+U data (2012)  Reach higher N part than in Au+Au  Provide higher energy density Way to test the sequential melting hypothesis STAR preliminary

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 9  measurements in RHIC/STAR   e + e – (BR ~ 2%)  Large invariant mass (m ee ~10 GeV/c 2 )  Back-to-back electron-positron pair  Rather energetic electrons (typically >3 GeV)

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 10  measurements in RHIC/STAR   e + e – (BR ~ 2%)  Large invariant mass (m ee ~10 GeV/c 2 )  Back-to-back electron-positron pair  Rather energetic electrons (typically >3 GeV) a central Au+Au event in STAR

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions Triggering on  events  L0: ‘High tower trigger’ saves events with high energy hit in the Barrel Electromagnetic Calorimeter (BEMC) tower  L2 in p+p and d+Au only – software trigger: coarse reconstruction of cluster energy, opening angle, invariant mass L0,L2 L2 1. Trigger on energetic hits in the BEMC

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions Finding electron tracks  Find tracks in the Time Expansion Chamber (TPC) based on Fractional energy loss dE/dx -1.2<nσ e <3 (A+A analyses) 2. Find electron tracks in the TPC 1. Trigger on energetic hits in the BEMC

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions Matching  Clusterize energy in the BEMC Cluster: 3 adjacent towers with most of the energy deposit  Project TPC tracks onto clusters to match them ΔR match = √(Δη 2 +Δφ 2 ) < Find electron tracks in the TPC 1. Trigger on energetic hits in the BEMC 3. Match BEMC clusters and TPC tracks

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions ID in the calorimeter  Cluster energy matches track momentum 0.75<E/p<1.4 (U+U analysis)  Energy deposit is compact, mostly in a single tower triggered e ± : E tower /E>0.7, associated e ± : E tower /E>0.5 (U+U analysis) 1. Trigger on energetic hits in the BEMC 2. Find electron tracks in the TPC 3. Match BEMC clusters and TPC tracks 4. ID cuts in the BEMC

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 15 Peak extraction (U+U example)  Combinatorial background is fitted with exponential, then subtracted U+U √s NN =193 GeV 0-60% e + e − pair invariant mass STAR preliminary

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 16 Peak extraction (U+U example)  Combinatorial background is fitted with exponential, then subtracted  Shape of Drell-Yan is from pQCD calculations; open bb contribution is from PYTHIA  peak shape is from embedded MC simulation  Normalization of  peak and Drell-Yan+bb is fitted simultaneously Note: log-likelihood method applied in the fits _ _ comb. bg subtracted e + e − pair invariant mass U+U √s NN =193 GeV 0-60% STAR preliminary

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 17  x-section and p T -spectrum in U+U STAR preliminary PLB91, 481 (1980). PRL88, (2002). PRD83, (2011) Major systematic uncertainties (%) (STAR preliminary) Geometrical acceptance Trigger efficiency Tracking efficiency11.8 TPC electron identification TPC-BEMC matching5.4 BEMC electron identification5.9 Embedding p T and y shapes2.1 Signal extraction ϒ cross section (STAR preliminary) U+U 193 GeV, 0-60% centrality stat. syst Expected T is extrapolated from ISR, CDF and CMS pp (pp) results _

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 18  in p+p and d+Au ϒ in p+p 200 GeV, |y|<0.5, L0 & L2 ∫L dt = 20.0 pb -1 N  (total)= 152 ± 23 (stat. + fit) Phys.Lett. B735 (2014) 127

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 19  in Au+Au Phys.Lett. B735 (2014) 127 ϒ in Au+Au 200 GeV, |y|<1 ∫L dt = 1075 µb -1 N  = 254 ± 29 centrality bins mid-peripheral (30-60%) central (0-10%) mid-central (10-30%)

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 20  in p+p – QCD baseline Phys.Lett. B735 (2014) 127  p+p ϒ cross section vs. y, compared to pQCD predictions R. Vogt, Phys. Rep , 2008

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 21  in p+p – QCD baseline STAR Preliminary  p+p ϒ cross section, compared to world data trend Phys.Lett. B735 (2014) 127  p+p ϒ cross section vs. y, compared to pQCD predictions R. Vogt, Phys. Rep , 2008

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 22  R dAu – CNM effects Phys.Lett. B735 (2014) 127  Models include  Gluon nPDF (Anti)shadowing  Initial parton energy loss  Indication of suppression at mid-rapidity beyond models R dAu =0.48 ± 0.14(stat) ± 0.07(syst) ± 0.02 (pp stat) ± 0.06 (pp syst) |y|<0.5

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 23  R dAu – CNM effects  Models include  Gluon nPDF (Anti)shadowing  Initial parton energy loss  Indication of suppression at mid-rapidity beyond models Phys.Lett. B735 (2014) 127  STAR data consistent with E772

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 24  R AA Au+Au, d+Au: Phys.Lett. B735 (2014) 127 Au+Au data Peripheral data and d+Au (|y|<1) is consistent with no suppression Significant suppression in central data

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 25  R AA Au+Au, d+Au: Phys.Lett. B735 (2014) 127 Au+Au and U+U data Peripheral data and d+Au (|y|<1) is consistent with no suppression Significant suppression in central data Trend in U+U follows and extends trend in Au+Au

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 26  R AA – data vs. models Au+Au, d+Au: Phys.Lett. B735 (2014) 127 Model calculations: Strong binding scenario, CNM effects included Emerick, Zhao, Rapp, Eur. Phys. J A48, 72 (2012) Potential model based on heavy quark internal energy ‘B’ assumes 428 < T < 443 MeV Strickland, Bazov, Nucl. Phys. A879, 25 (2012) Potential model based on heavy quark free energy ‘A’ disfavored  suppression indicates color deconfinement However: CNM effects need further study  Planned p+Au run at RHIC for 2015

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 27  R AA – RHIC comparison Au+Au, d+Au: Phys.Lett. B735 (2014) 127 PHENIX Collaboration, arXiv:  STAR vs. PHENIX: data are consistent

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 28  R AA – RHIC & LHC comparison Au+Au, d+Au: Phys.Lett. B735 (2014) 127 PHENIX Collaboration, arXiv: CMS Collaboration, PRL 109 (2012)  STAR vs. PHENIX: data are consistent  RHIC vs. LHC:  High-N part suppression comparable at LHC and RHIC  Suppression of  appears to be ~flat at LHC  is suppression driven by the energy density? Note the uncertainties, however

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 29 B  (1S) R AA in Au+Au  ϒ (1S) R AA is consistent with unity in d+Au and peripheral and mid-central Au+Au  Indication of suppression consistent with model calculation in central Au+Au Model calculations Strickland-Bazov model B: Hot and cold effects Nucl. Phys. A879, 25 (2012) Liu-Chen model: Dissociation of Quarkonium No CNM effects Phys. Lett. B697 (2011) 32 Phys.Lett. B735 (2014) 127

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 30 Excited  states in Au+Au Au+Au Phys.Lett. B735 (2014) 127 Central Au+Au:  Excited states ϒ (2S) and ϒ (3S) consistent with complete melting  ϒ (1S) suppression is similar to high-p T J/ψ

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 31 Central Au+Au:  Excited states ϒ (2S) and ϒ (3S) consistent with complete melting  ϒ (1S) suppression is similar to high-p T J/ψ ϒ suppression pattern supports sequential melting Excited  states in Au+Au Au+Au Phys.Lett. B735 (2014) 127

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 32 Excited  states – LHC comparison Au+Au  RHIC √s NN =200 GeV Au+Au and LHC √s NN =2.76 TeV Pb+Pb collisions: Similar suppression of central ϒ (1S) Phys.Lett. B735 (2014) 127

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 33 Outlook: analyses underway Au+Au √s NN =200 GeV, 2011 ~ 2800 ub -1  same setup as in 2010 p+p √s=500 GeV, 2011 ~ 22 pb -1  Double x-section, L0-only  p T spectrum  Excited-to-ground ratio

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 34 Outlook: Muon Telescope Detector  Outermost, gas detector  Physics goal: Precision measurement of heavy quarkonia through the muon channel  Acceptance: 45% in azimuth, |y|<0.5 ϒ projection R AA

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 35 Outlook: Muon Telescope Detector  Outermost, gas detector  Physics goal: Precision measurement of heavy quarkonia through the muon channel  Acceptance: 45% in azimuth, |y|<0.5 ϒ projection R AA Complete in 2014, sampled ~13.8 nb -1 in Au+Au data

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 36  Strong  suppression in √s NN =200 GeV central Au+Au data  New √s NN =193 GeV U+U measurement confirms Au+Au trend and extends it to higher N part  Similar R AA at RHIC and LHC in most central collisions  Sequential melting: ground state is suppressed, no evidence for surviving excited states in central Au+Au collisions  Unexpected suppression in mid-rapidity d+Au CNM effects need further studies  upcoming p+A run Summary

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 37  Strong  suppression in √s NN =200 GeV central Au+Au data  New √s NN =193 GeV U+U measurement confirms Au+Au trend and extends it to higher N part  Similar R AA at RHIC and LHC in most central collisions  Sequential melting: ground state is suppressed, no evidence for surviving excited states in central Au+Au collisions  Unexpected suppression in mid-rapidity d+Au CNM effects need further studies  upcoming p+A run Summary Stay tuned for new  μ + μ – results with MTD

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 38 Thank You! AGH University of Science and Technology Alikhanov Institute for Theoretical and Experimental Physics Argonne National Laboratory Brookhaven National Laboratory Central China Normal University Cracow University of Technology Creighton University Czech Technical University in Prague Frankfurt Institute for Advanced Studies (FIAS) Indian Institute of Technology. Mumbai Indiana University, CEEM Institute of High Energy Physics - Beijing Institute of High Energy Physics - Protvino Institute of Modern Physics, Lanzhou Institute of Nuclear Physics PAS Institute of Physics. Bhubaneswar Instituto de Fisica da Universidade de Sao Paulo Joint Institute for Nuclear Research Kent State University Korea Institute of Science and Technology Information Lawrence Berkeley National Laboratory Massachusetts Institute of Technology Max-Planck-Institut fuer Physics Michigan State University Moscow Engineering Physics Institute National Institute of Science Education and Research Nuclear Physics Inst., Academy of Sciences - Prague Ohio State University Panjab University STAR Collaboration Pennsylvania State University Purdue University Pusan National University Rice University Shandong University Shanghai Institue of Applied Physics Temple University Texas A&M University Tsinghua University United States Naval Academy Universidade Estadual de Campinas University of California - Davis University of California - Los Angeles University of California, Berkeley University of Houston University of Illinois at Chicago University of Jammu University of Kentucky University of Rajasthan University of Science and Technology of China (USTC) University of Texas - Austin University of Washington University of Zagreb Valparaiso University Variable Energy Cyclotron Centre. Kolkata Warsaw University of Technology Wayne State University World Laboratory for Cosmology and Particle Physics (WLCAPP) Yale University

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 39 High-pT J/ψ – motivation R dAu ~ 1 at high P T  CNM effects do not play a strong role Less regeneration at high P T PHENIX data: Phys. Rev. C 87, (2013) Model: Eskola, Paukkuenna, Salgado, Nucl.Phys.A830, 599 (2009)

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 40 Outlook: Heavy Flavor Tracker  Innermost, silicon detectors (3 subsystems)  Resolves secondary vertex  Physics goal: Precision measurement of heavy quark production Complete and taking data in Run14 D 0 v 2 projection IST at 14 cm PXL at 2.9 and 8.2 cm SSD at 22 cm

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 41 Rapp WBS & SBS Emerick, Zhao, Rapp, Eur. Phys. J A48, 72 (2012)

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 42 CMS  CMS 2.76 TeV Pb+Pb CMS Collaboration, PRL 109 (2012)

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 43 Peak extraction  0-10% pT<2GeV   10-30% 2<pT<4GeV   30-60% pT>4GeV 

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 44 U+U acceptance and efficiency  15M high-tower-triggered U+U 193 GeV events (263 μb -1 )  Divided into 3 centrality bins: 0 – 10 % 10 – 30 % 30 – 60 %  or… 3 bins in p T  : 0 – 2 GeV/c 2 – 4 GeV/c 4<GeV/c  Total acceptance & efficiency for   e + e – reconstruction: ~ 2-3% STAR preliminary

PANIC `14, 25/08/2014 R. Vértesi for STAR – ϒ production in U+U collisions 45  p+p : pQCD baseline  Nuclear modification factor (R dA,AA )  d+Au: generally considered as proxy for CNM  A+A: hot nuclear matter effects – sQGP Nuclear modification R AA =1 if no modification by the medium