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dc.creatorAdamczyk, L
dc.creatorAdkins, JK
dc.creatorAgakishiev, G
dc.creatorAggarwal, MM
dc.creatorAhammed, Z
dc.creatorAlekseev, I
dc.creatorAlford, J
dc.creatorAparin, A
dc.creatorArkhipkin, D
dc.creatorAschenauer, EC
dc.creatorAverichev, GS
dc.creatorBanerjee, A
dc.creatorBellwied, R
dc.creatorBhasin, A
dc.creatorBhati, AK
dc.creatorBhattarai, P
dc.creatorBielcik, J
dc.creatorBielcikova, J
dc.creatorBland, LC
dc.creatorBordyuzhin, IG
dc.creatorBouchet, J
dc.creatorBrandin, AV
dc.creatorBunzarov, I
dc.creatorBurton, TP
dc.creatorButterworth, J
dc.creatorCaines, H
dc.creatorCalderón De La Barca Sánchez, M
dc.creatorCampbell, JM
dc.creatorCebra, D
dc.creatorCervantes, MC
dc.creatorChakaberia, I
dc.creatorChaloupka, P
dc.creatorChang, Z
dc.creatorChattopadhyay, S
dc.creatorChen, JH
dc.creatorChen, X
dc.creatorCheng, J
dc.creatorCherney, M
dc.creatorChristie, W
dc.creatorContin, G
dc.creatorCrawford, HJ
dc.creatorDas, S
dc.creatorDe Silva, LC
dc.creatorDebbe, RR
dc.creatorDedovich, TG
dc.creatorDeng, J
dc.creatorDerevschikov, AA
dc.creatorDi Ruzza, B
dc.creatorDidenko, L
dc.creatorDilks, C
dc.creatorDong, X
dc.creatorDrachenberg, JL
dc.creatorDraper, JE
dc.creatorDu, CM
dc.creatorDunkelberger, LE
dc.creatorDunlop, JC
dc.creatorEfimov, LG
dc.creatorEngelage, J
dc.creatorEppley, G
dc.creatorEsha, R
dc.creatorEvdokimov, O
dc.creatorEyser, O
dc.creatorFatemi, R
dc.creatorFazio, S
dc.creatorFederic, P
dc.creatorFedorisin, J
dc.creatorFeng, Z
dc.creatorFilip, P
dc.creatorFisyak, Y
dc.creatorFlores, CE
dc.creatorFulek, L
dc.creatorGagliardi, CA
dc.creatorGarand, D
dc.creatorGeurts, F
dc.creatorGibson, A
dc.creatorGirard, M
dc.creatorGreiner, L
dc.creatorGrosnick, D
dc.creatorGunarathne, DS
dc.creatorGuo, Y
dc.creatorGupta, S
dc.creatorGupta, A
dc.creatorGuryn, W
dc.creatorHamad, A
dc.creatorHamed, A
dc.creatorHaque, R
dc.creatorHarris, JW
dc.creatorHe, L
dc.creatorHeppelmann, S
dc.creatorHeppelmann, S
dc.creatorHirsch, A
dc.creatorHoffmann, GW
dc.creatorHofman, DJ
dc.creatorHorvat, S
dc.creatorHuang, B
dc.creatorHuang, X
dc.creatorHuang, HZ
dc.creatorHuck, P
dc.creatorHumanic, TJ
dc.creatorIgo, G
dc.date.accessioned2021-02-03T17:29:52Z
dc.date.available2021-02-03T17:29:52Z
dc.date.issued2015-08-24
dc.identifier.issn0556-2813
dc.identifier.issn1089-490X
dc.identifier.doihttp://dx.doi.org/10.34944/dspace/5758
dc.identifier.otherCP5SK (isidoc)
dc.identifier.urihttp://hdl.handle.net/20.500.12613/5776
dc.description.abstract© 2015 American Physical Society. ©2015 American Physical Society. We report on measurements of dielectron (e+e-) production in Au+Au collisions at a center-of-mass energy of 200 GeV per nucleon-nucleon pair using the STAR detector at BNL Relativistic Heavy Ion Collider. Systematic measurements of the dielectron yield as a function of transverse momentum (pT) and collision centrality show an enhancement compared to a cocktail simulation of hadronic sources in the low invariant-mass region (Mee<1GeV/c2). This enhancement cannot be reproduced by the ρ-meson vacuum spectral function. In minimum-bias collisions, in the invariant-mass range of 0.30-0.76GeV/c2, integrated over the full pT acceptance, the enhancement factor is 1.76±0.06(stat.)±0.26(sys.)±0.29(cocktail). The enhancement factor exhibits weak centrality and pT dependence in STAR's accessible kinematic regions, while the excess yield in this invariant-mass region as a function of the number of participating nucleons follows a power-law shape with a power of 1.44±0.10. Models that assume an in-medium broadening of the ρ-meson spectral function consistently describe the observed excess in these measurements. Additionally, we report on measurements of ω- and φ-meson production through their e+e- decay channel. These measurements show good agreement with Tsallis blast-wave model predictions, as well as, in the case of the φ meson, results through its K+K- decay channel. In the intermediate invariant-mass region (1.1<Mee<3GeV/c2), we investigate the spectral shapes from different collision centralities. Physics implications for possible in-medium modification of charmed hadron production and other physics sources are discussed.
dc.format.extent024912-
dc.language.isoen
dc.relation.haspartPhysical Review C - Nuclear Physics
dc.relation.isreferencedbyAmerican Physical Society (APS)
dc.subjecthep-ex
dc.subjecthep-ex
dc.subjectnucl-ex
dc.titleMeasurements of dielectron production in Au + Au collisions at sNN =200 GeV from the STAR experiment
dc.typeArticle
dc.type.genreJournal Article
dc.relation.doi10.1103/PhysRevC.92.024912
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.date.updated2021-02-03T17:29:48Z
refterms.dateFOA2021-02-03T17:29:53Z


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