Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN =200 GeV

PHENIX Collaboration

Research output: Contribution to journalArticlepeer-review


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. We use the bottom electron fractions in Au+Au and p+p along with the previously measured heavy flavor electron RAA to calculate the RAA for electrons from charm and bottom hadron decays separately. We find that electrons from bottom hadron decays are less suppressed than those from charm for the region 3<pT<4GeV/c.

Original languageEnglish (US)
Article number034904
JournalPhysical Review C
Issue number3
StatePublished - Mar 7 2016

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN =200 GeV'. Together they form a unique fingerprint.

Cite this