Measurement of Non-Photonic Electron Angular Correlations with Charged Hadrons

Abstract

Correlations of non-photonic electrons with charged hadrons are studied using the PYTHIA Monte Carlo event generator in p+p collisions at $\sqrt{s_{NN}}=200$ GeV. We propose experimental methods to estimate the relative contributions to non-photonic electrons from charm and bottom decays. We present the measurement of azimuthal correlations between non-photonic electrons and charged hadrons in p+p collisions at $\sqrt{s_{NN}}=200$ GeV from STAR. The results are compared to PYTHIA simulations to estimate the relative contributions of $D$ and $B$ meson semi-leptonic decays to non-photonic electrons. Our preliminary result indicates that at $p_T\sim 4.0-6.0$ GeV/c the measured $B$ contribution to non-photonic electrons is comparable to $D$ contribution, and is consistent with the FONLL calculation.

arXiv comment8 pages, 7 figures. Proceedings for XIth International Workshop on Correlation and Fluctuation in Multiparticle Production, Nov. 21-24, Hangzhou, China. To appear in International Journal of Modern Physics E

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