000975654 001__ 975654
000975654 003__ SzGeCERN
000975654 005__ 20180924165709.0
000975654 0247_ $$2DOI$$a10.1088/0954-3899/32/12/S03
000975654 0248_ $$aoai:cds.cern.ch:975654$$pcerncds:CERN:FULLTEXT$$pcerncds:FULLTEXT$$pcerncds:CERN$$qcerncds:nucl-ex
000975654 035__ $$9SPIRES$$a6860796
000975654 035__ $$9Inspire$$a722755
000975654 037__ $$anucl-ex/0607031
000975654 041__ $$aeng
000975654 100__ $$aZhang, H$$uCERN
000975654 245__ $$aHeavy Flavor Production at STAR
000975654 260__ $$c2006
000975654 269__ $$c30 Jul 2006
000975654 300__ $$a7 p
000975654 520__ $$ae present measurements on $D^0$ meson production via direct reconstruction of its hadronic decay channel $D^0\to K\pi$ in minimum bias $d$+Au and Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV with $p_T$ up to $\sim$3 GeV/$c$. Non-photonic electron spectra from the charm semi-leptonic decays are analyzed from the same data set as well as in $p$+$p$ collision at $\sqrt{s}$=200 GeV using the STAR Time-of-Flight (TOF) and Barrel EMC (BEMC) detectors, respectively. Results of the charm-decayed single muon (prompt muon) spectra are also presented at low $p_T$ in Au+Au collisions measured by the TOF detector. The charm production total cross-section per nucleon-nucleon collision is measured to be 1.26$\pm$0.09(stat.)$\pm$0.23(sys.) mb in minimum bias Au+Au collisions, which is consistent with the $N_{bin}$ scaling compared to 1.4$\pm0.2\pm$0.4 mb in minimum bias $d$+Au collisions, and supports the idea that charm quarks should be produced mostly via parton fusion at early stage in relativistic heavy-ion collisions. A Blast-Wave model fit to the low $p_T$ ($<2$ GeV/c) non-photonic electrons, prompt muons and $D^0$ spectra shows that charm hadrons may kinetically freeze-out earlier than light hadrons with a smaller collective velocity. The nuclear modification factors ($R_{AA}$) of the non-photonic electrons in central Au+Au collisions are significantly below unity at $p_T>\sim$2 GeV/$c$, which indicates a significant amount of energy loss for heavy quarks in Au+Au collisions. The charm transverse momentum distribution must have been modified by the hot and dense matter created in central Au+Au collisions at RHIC.
000975654 595__ $$aLANL EDS
000975654 595__ $$aSIS:2006 PR/LKR added
000975654 65017 $$2SzGeCERN$$aNuclear Physics - Experiment
000975654 690C_ $$aARTICLE
000975654 690C_ $$aCERN
000975654 695__ $$9LANL EDS$$aNuclear Experiment
000975654 720__ $$aZhang, Haibin
000975654 773__ $$cs35-42$$n12$$pJ. Phys. G$$v32$$y2006
000975654 8564_ $$uhttp://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=nucl-ex&id=0607031$$yAccess to fulltext document
000975654 8564_ $$uhttps://cds.cern.ch/record/975654/files/0607031.pdf$$yAccess to fulltext document
000975654 916__ $$sn$$w200631
000975654 960__ $$a13
000975654 961__ $$c20101108$$h1623$$lCER01$$x20060801
000975654 962__ $$b942946$$ks35-42$$nlosangeles20060326
000975654 963__ $$aPUBLIC
000975654 970__ $$a002639263CER
000975654 980__ $$aARTICLE
000975654 980__ $$aConferencePaper