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In this paper, we present our analysis of mid-rapidity non-photonic electron(NPE) production at pT >0.2GeV/c in p+p collisions at $\sqrt{s_{NN}}$ = 200GeV. The dataset is about 78M TOF-triggered events taken from RHIC year 2008runs. Through the measurement of e/\pi ratio, we find that the photonicbackground electrons from gamma conversions are reduced by about a factor of 10compared with those in STAR previous runs due to the absence of inner trackingdetectors and the supporting materials. The dramatic increase ofsignal-to-background ratio will allow us to improve the precision on extractingthe charm cross-section via its semi-leptonic decays to electrons.

Measurement of Non-photonic Electrons in p + p Collisions at $\sqrt{s_{NN}}$ = 200 GeV with reduced detector material in STAR