Non-Photonic Electron p_T Distributions and Correlations of Electrons from B and D Meson Decays with Charged Hadrons

2006/02/08 by Xiaoyan Lin, Lin, Xiaoyan
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0602067

revised version with modified title, refined figures and more references added

arxiv created 2006/10/20 · arxiv updated 2009/12/01

Abstract

We compare the non-photonic electron and D⁰ meson p_T distributions measured at RHIC with the PYTHIA Monte Carlo event generator in p+p collisions at √s_NN=200 GeV. A delta fragmentation function much harder than the Peterson function, consistent with recombination scheme for charm meson formation, is needed to match the experimental data. Attempts to fit the non-photonic electrons at high p_T show large uncertainties and the B meson semi-leptonic decays may not be dominant for electron p_T up to 8 GeV/c. Correlations of non-photonic electrons with charged hadrons are studied. We propose an experimental method to quantitatively determine the relative contributions of D and B meson semi-leptonic decays to the non-photonic electrons.

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