New PHENIX Results on Mid-Rapidity Bottom and Charm Production in Au+Au collisions at $\sqrt{s_{NN}}$= 200 GeV

Jun 1, 2020, 1:35 PM
20m
https://cern.zoom.us/j/99114030907

https://cern.zoom.us/j/99114030907

Oral Presentation Heavy Flavor and Quarkonia Parallel

Speaker

Dr Ajeeta Khatiwada (Purdue University (US))

Description

Energy loss of quarks in the hot and dense medium has been studied for
decades. Both the experimental and theoretical efforts hinted that the
energy loss is quark mass dependent (the yield of heavier quarks will be
less suppressed). It was found that the electrons from heavy quarks (charm,
and bottom) are less or similarly suppressed compared to that of light
hadrons. The mass ordering of the suppression between charm and bottom was
not clear by now due to large experimental uncertainties. We have fully
exploited the events recorded at PHENIX from Au+Au collisions from RHIC
Year-2014 run, and with the new charm and bottom $p_{T}$ spectra from p+p
collisions from Year-2015 run, we can obtain the new $R_{AA}$ for charm and
bottom quarks with smaller uncertainties. We will show the latest results on
the $R_{AA}$ of electrons and unfolded hadrons from charm and bottom quarks
separately, and implications on the understanding of the quark mass
dependence of the energy loss.

Collaboration (if applicable) PHENIX
Track Heavy Flavor and Quarkonia
Contribution type Contributed Talk

Primary author

Gabor David (Brookhaven National Laboratory)

Presentation materials