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Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{; ; ; s}; ; ; $=200 GeV

The contribution of $B$ meson decays to non-photonic electrons, which are mainly produced by the semi-leptonic decays of heavy flavor mesons, in $p+p$ collisions at $\sqrt{; ; ; s}; ; ; =$ 200 GeV has been measured using azimuthal correlations between non-photonic electrons and hadrons. The extracted $B$ decay contribution is approximately 50% at a transverse momentum of $p_{; ; ; T}; ; ; \geq 5$ GeV/$c$. These measurements constrain the nuclear modification factor for electrons from $B$ and $D$ meson decays. The result indicates that $B$ meson production in heavy ion collisions is also suppressed at high $p_{; ; ; T}; ; ; $.

B; semileptonic decay p p; interaction D; semileptonic decay heavy ion; scattering electron; production electron; yield electron hadron; angular correlation transverse momentum; dependence nuclear matter; effect STAR experimental results Brookhaven RHIC Coll 200 GeV-cms/nucleon

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