Measurements of dielectron production in Au + Au collisions at sNN =200 GeV from the STAR experiment
dc.creator | Adamczyk, L | |
dc.creator | Adkins, JK | |
dc.creator | Agakishiev, G | |
dc.creator | Aggarwal, MM | |
dc.creator | Ahammed, Z | |
dc.creator | Alekseev, I | |
dc.creator | Alford, J | |
dc.creator | Aparin, A | |
dc.creator | Arkhipkin, D | |
dc.creator | Aschenauer, EC | |
dc.creator | Averichev, GS | |
dc.creator | Banerjee, A | |
dc.creator | Bellwied, R | |
dc.creator | Bhasin, A | |
dc.creator | Bhati, AK | |
dc.creator | Bhattarai, P | |
dc.creator | Bielcik, J | |
dc.creator | Bielcikova, J | |
dc.creator | Bland, LC | |
dc.creator | Bordyuzhin, IG | |
dc.creator | Bouchet, J | |
dc.creator | Brandin, AV | |
dc.creator | Bunzarov, I | |
dc.creator | Burton, TP | |
dc.creator | Butterworth, J | |
dc.creator | Caines, H | |
dc.creator | Calderón De La Barca Sánchez, M | |
dc.creator | Campbell, JM | |
dc.creator | Cebra, D | |
dc.creator | Cervantes, MC | |
dc.creator | Chakaberia, I | |
dc.creator | Chaloupka, P | |
dc.creator | Chang, Z | |
dc.creator | Chattopadhyay, S | |
dc.creator | Chen, JH | |
dc.creator | Chen, X | |
dc.creator | Cheng, J | |
dc.creator | Cherney, M | |
dc.creator | Christie, W | |
dc.creator | Contin, G | |
dc.creator | Crawford, HJ | |
dc.creator | Das, S | |
dc.creator | De Silva, LC | |
dc.creator | Debbe, RR | |
dc.creator | Dedovich, TG | |
dc.creator | Deng, J | |
dc.creator | Derevschikov, AA | |
dc.creator | Di Ruzza, B | |
dc.creator | Didenko, L | |
dc.creator | Dilks, C | |
dc.creator | Dong, X | |
dc.creator | Drachenberg, JL | |
dc.creator | Draper, JE | |
dc.creator | Du, CM | |
dc.creator | Dunkelberger, LE | |
dc.creator | Dunlop, JC | |
dc.creator | Efimov, LG | |
dc.creator | Engelage, J | |
dc.creator | Eppley, G | |
dc.creator | Esha, R | |
dc.creator | Evdokimov, O | |
dc.creator | Eyser, O | |
dc.creator | Fatemi, R | |
dc.creator | Fazio, S | |
dc.creator | Federic, P | |
dc.creator | Fedorisin, J | |
dc.creator | Feng, Z | |
dc.creator | Filip, P | |
dc.creator | Fisyak, Y | |
dc.creator | Flores, CE | |
dc.creator | Fulek, L | |
dc.creator | Gagliardi, CA | |
dc.creator | Garand, D | |
dc.creator | Geurts, F | |
dc.creator | Gibson, A | |
dc.creator | Girard, M | |
dc.creator | Greiner, L | |
dc.creator | Grosnick, D | |
dc.creator | Gunarathne, DS | |
dc.creator | Guo, Y | |
dc.creator | Gupta, S | |
dc.creator | Gupta, A | |
dc.creator | Guryn, W | |
dc.creator | Hamad, A | |
dc.creator | Hamed, A | |
dc.creator | Haque, R | |
dc.creator | Harris, JW | |
dc.creator | He, L | |
dc.creator | Heppelmann, S | |
dc.creator | Heppelmann, S | |
dc.creator | Hirsch, A | |
dc.creator | Hoffmann, GW | |
dc.creator | Hofman, DJ | |
dc.creator | Horvat, S | |
dc.creator | Huang, B | |
dc.creator | Huang, X | |
dc.creator | Huang, HZ | |
dc.creator | Huck, P | |
dc.creator | Humanic, TJ | |
dc.creator | Igo, G | |
dc.date.accessioned | 2021-02-03T17:29:52Z | |
dc.date.available | 2021-02-03T17:29:52Z | |
dc.date.issued | 2015-08-24 | |
dc.identifier.issn | 0556-2813 | |
dc.identifier.issn | 1089-490X | |
dc.identifier.doi | http://dx.doi.org/10.34944/dspace/5758 | |
dc.identifier.other | CP5SK (isidoc) | |
dc.identifier.uri | http://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.extent | 024912- | |
dc.language.iso | en | |
dc.relation.haspart | Physical Review C - Nuclear Physics | |
dc.relation.isreferencedby | American Physical Society (APS) | |
dc.subject | hep-ex | |
dc.subject | hep-ex | |
dc.subject | nucl-ex | |
dc.title | Measurements of dielectron production in Au + Au collisions at sNN =200 GeV from the STAR experiment | |
dc.type | Article | |
dc.type.genre | Journal Article | |
dc.relation.doi | 10.1103/PhysRevC.92.024912 | |
dc.ada.note | For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu | |
dc.date.updated | 2021-02-03T17:29:48Z | |
refterms.dateFOA | 2021-02-03T17:29:53Z |