Measurement of electrons from open heavy-flavor hadron decays in Au+Au collisions at √s.sub.NN./sub. = 200 GeV with the STAR detector

0577577 - ÚJF 2024 RIV US eng J - Článek v odborném periodiku
Abdulhamid, M. I. - Aboona, B. E. - Adam, J. - Adamczyk, L. - Bielčík, J. - Bielčíková, Jana - Češka, J. - Das, A. - Holub, L. - Chaloupka, P. - Kosarzewski, L. K. - Kramárik, L. - Líčeník, Robert - Lomnický, O. - Prozorova, V. - Robotková, Monika - Šumbera, Michal - Truhlář, T. - Trzeciak, B. A. … celkem 366 autorů
Measurement of electrons from open heavy-flavor hadron decays in Au+Au collisions at √s_NN = 200 GeV with the STAR detector.
Journal of High Energy Physics. Roč. 2023, č. 6 (2023), č. článku 176. ISSN 1029-8479. E-ISSN 1029-8479
Výzkumná infrastruktura: BNL-CZ III - 90234
Institucionální podpora: RVO:61389005
Klíčová slova: STAR collaboration * heavy ion experiments * heavy quark production
Obor OECD: Nuclear physics
Impakt faktor: 5.4, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1007/JHEP06(2023)176

We report a new measurement of the production of electrons from open heavy-flavor hadron decays (HFEs) at mid-rapidity (vertical bar y vertical bar < 0.7) in Au+Au collisions at root s(NN) = 200 GeV. Invariant yields of HFEs are measured for the transverse momentum range of 3.5 < p(T) < 9 GeV/c in various configurations of the collision geometry. The HFE yields in head-on Au+Au collisions are suppressed by approximately a factor of 2 compared to that in p+ p collisions scaled by the average number of binary collisions, indicating strong interactions between heavy quarks and the hot and dense medium created in heavy-ion collisions. Comparison of these results with models provides additional tests of theoretical calculations of heavy quark energy loss in the quark-gluon plasma.
Trvalý link: https://hdl.handle.net/11104/0346696