Single electron yields from semileptonic charm and bottom hadron decays in Au$+$Au collisions at $\sqrt{s_{NN}}=200$ GeV

The PHENIX collaboration
Phys.Rev.C 93 (2016) 034904, 2016.

Abstract (data abstract)
The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy-flavor production in minimum bias Au+Au collisions at $\sqrt{s_{NN}}=200$ 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 due 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 use the bottom electron fractions in Au+Au and p+p along with the previously measured heavy flavor electron $R_{AA}$ to calculate the $R_{AA}$ for electrons from charm and bottom hadron decays separately.

  • Figure 1

    Data from Fig. 15 of PRC 93, 034904


    Bottom and charm hadron invariant yields as a function of $p_{T}$.

  • Figure 2

    Data from Fig. 17 of PRC 93, 034904


    Bottom hadron fraction with respect to heavy flavor electron as a function of $p_{T}$.

  • Figure 3

    Data from Fig. 19 (a) of PRC 93, 034904


    Bottom and charm hadron $R_{AA}$ as a function of $p_{T}$.

  • Figure 4

    Data from Fig. 19 (b) of PRC 93, 034904


    $(b\rightarrow e$ $R_{AA}) / (c\rightarrow e$ $R_{AA})$ as a function of $p_{T}$.

Version 3 modifications: Corrected a typo in a figure caption and added AU AU to the list of reactions

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