Identification of Bottom Contribution in Non-photonic Electron Spectra and $v_2$ at RHIC

Details Identification of Bottom Contribution in Non-photonic Electron Spectra and $v_2$ at RHIC Identification of Bottom Contribution in Non-photonic Electron Spectra and $v_2$ at RHIC

2008-05-15

arxiv.org/abs/0805.2202v1

23rd Winter Workshop on Nuclear Dynamics, EP Systema, Budapest, ISBN 978 963 86934 2 6, 231, 2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages,4 figures, 23rd Winter Workshop on Nuclear Dynamics

Scientific paper

We present a study on the spectra for heavy flavor (charm and bottom) decayed electrons in 200 GeV $p+p$ collisions and provide the relative contributions of charm and bottom hadrons from the PYTHIA calculations. The results suggest that the crossing point of the electron spectra from charm and bottom decays is above 7 GeV/$c$ and bottom contribution is not dominant for electron $p_{T}<3$ GeV/$c$. The upper limit of the relative cross section ratio is reported as $\sigma_{b\bar{b}}/\sigma_{c\bar{c}}\leq(0.49\pm0.09\pm0.09)%$. We also compare the $v_2$ distribution from simulation to the experimental data in 200 GeV $Au+Au$ collisions and estimate the possible charm $v_2$.

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