Single electron yields from semileptonic charm and bottom hadron decays in Au+ Au collisions at √s.sub.NN./sub.=200 GeV

0522570 - FZÚ 2020 RIV US eng J - Journal Article
Adare, A. - Aidala, C. - Ajitanand, N.N. - Tomášek, Michal - Vrba, Václav … Total 432 authors
Single electron yields from semileptonic charm and bottom hadron decays in Au+ Au collisions at √s_NN=200 GeV.
Physical Review C. Roč. 93, č. 3 (2016), s. 1-29, č. článku 034904. ISSN 2469-9985. E-ISSN 2469-9993
Institutional support: RVO:68378271
Keywords : PHENIX * electron hadron: correlation * quark gluon: plasma * vertex detector * experimental results * transverse momentum
OECD category: Particles and field physics
Impact factor: 3.820, year: 2016
Method of publishing: Limited access
https://doi.org/10.1103/physrevc.93.034904

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in minimum bias Au+Au collisions at sNN=200 GeV via the yields of electrons from semileptonic decays of charm and bottom hadrons. Previous heavy flavor electron measurements indicated substantial modification in the momentum distribution of the parent heavy quarks owing to the quark-gluon plasma created in these collisions. For the first time, using the PHENIX silicon vertex detector to measure precision displaced tracking, the relative contributions from charm and bottom hadrons to these electrons as a function of transverse momentum are measured in Au+Au collisions. We compare the fraction of electrons from bottom hadrons to previously published results extracted from electron-hadron correlations in p+p collisions at sNN=200 GeV and find the fractions to be similar within the large uncertainties on both measurements for pT>4GeV/c.

Permanent Link: http://hdl.handle.net/11104/0307041