Single electrons from semi-leptonic charm and bottom hadron decays in Au+Au collisions at PHENIX

32nd Winter Workshop on Nuclear Dynamics

Hachiya, Takashi^1

RIKEN BNL Research Center, Brookhaven National Laboratory, Upton

NY

11973-5000, United States^1

关键词: Au+Au collisions;    Heavy-quark;    High energy heavy-ion collision;    Leptonic decay;    Quark-gluon plasma;    Silicon Vertex Detectors;    Single electron;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/736/1/012012/pdf
DOI  :  10.1088/1742-6596/736/1/012012

来源: IOP

【 摘 要 】

Heavy quarks are clean probes to explore the nature of strongly coupled quark gluon plasma created in high energy heavy ion collisions. The strong suppression of single electrons from semi-leptonic decays of heavy flavor hadrons was observed. To further understand the heavy quark suppressions, PHENIX installed the silicon vertex detector (VTX) which allows us to measure the bottom and charm productions separately from measurement of displaced tracks. For the first time, we observed the electrons from bottom hadron decays are less suppressed than those from charms for 3 TTin minimum bias Au+Au collisions at √sNN= 200 GeV. We present the results of separated bottom and charm productions using the 2011 dataset with the VTX.