Non$-$Photonic Electron and Charged Hadron Azimuthal Correlation in p+p Collisions at $\sqrt{s}$ = 500 GeV in STAR

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Théâtre National (Centre Bonlieu)

Théâtre National

Centre Bonlieu

Board: 43
Poster Heavy flavor and quarkonia production


Dr Wei Li (Shanghai Institute of Applied Physics)


RHIC measurement on non-photonic electrons from heavy quark decays shows similar suppression as light hadrons at high $p_{T}$ in central Au+Au collisions. However, the interpretation is complicated by the combined contributions from charm and bottom decays. Non-photonic electron and charged hadron azimuthal correlation has been used as a powerful tool to disentangle charm and bottom contributions at $\sqrt{s}$ = 200 GeV up to $p_{T}$ ~ 9 GeV/c. Combining the non-photonic electron $R_{AA}$ and the relative bottom decay contribution in $p+p$ collisions suggests the bottom decay electrons are also suppressed in central Au+Au collisions. We will report the preliminary results of non-photonic electron and charged hadron azimuthal correlation at midrapidity for $6.5 $<$ $p_T$ $<$ 12.5$ GeV/c in run 2009 p+p collisions at $\sqrt{s}$=500 GeV at RHIC. The correlation distributions are compared with PYTHIA simulations to extract the bottom relative contribution to non-photonic electrons. The comparison between 200 GeV and 500 GeV results will deepen our understanding on the heavy flavor production at RHIC.

Primary author

Dr Wei Li (Shanghai Institute of Applied Physics)

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