22-27 September 2016
East Lake International Conference Center
Asia/Chongqing timezone
<a href="http://hp2016.ccnu.edu.cn">http://hp2016.ccnu.edu.cn</a>

Measurements of electrons from semi-leptonic heavy flavor decays in p+p and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV at STAR

24 Sep 2016, 17:00
20m
Wuhan Hall (East Lake International Convention Center)

Wuhan Hall

East Lake International Convention Center

Speaker

Yaping Wang (Central China Normal University CCNU (CN))

Description

Heavy quarks are predominantly produced at early stages of high-energy heavy-ion collisions due to their large masses, and thus experience the whole evolution of the Quark-Gluon Plasma (QGP). Studies of interactions between heavy quarks and the QGP can provide new insights to the properties of the QGP. Heavy quark production measured in p+p collisions serves as a baseline to similar measurements in heavy-ion collisions, and is expected to be described by perturbative Quantum Chromodynamics calculations. Therefore measurements of heavy quark production via measuring the electrons from semi-leptonic decays of heavy flavor hadrons, also known as Non-Photonic Electron (NPE), in both p+p and Au+Au collisions are crucial.

In this talk, we will present the updated results of NPE production in p+p collisions at $\sqrt{s}$ = 200 GeV from the STAR experiment with much improved precision and wider kinematic coverage than previous measurements. We will also show the results of B-hadron contribution to NPE extracted from azimuthal correlations between NPE and charged hadrons in p+p collisions. The nuclear modification factor ($R_{AA}$) for NPE in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV using 2010 data will be presented. Finally, we will show the analysis status of separating B- and D-decayed electrons utilizing the new Heavy Flavor Tracker as well as measuring NPE $R_{AA}$ in Au+Au collisions with 2014 data.

Summary

Yaping Wang for the STAR Collaboration

Presentation type Oral

Primary author

Yaping Wang (Central China Normal University CCNU (CN))

Presentation Materials

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