High $p_{T}$ Single Electrons from Heavy-Flavor Decays in $p$+$p$ Collisions at $\sqrt{s}$ = 200 GeV and 62 GeV in the PHENIX experiment at RHIC

The PHENIX experiment at RHIC is a high precision, high rate spectrometer. The cross section of $c\bar{c}$ and $b\bar{b}$ pairs can be determined by measuring the spectra of electrons from the semi-leptonic decays of open charm/bottom mesons. The PHENIX central arm detectors cover $\pi$ in azimuth and $|\eta|<$0.35 with excellent electron identification capability and momentum resolution. We will present the work towards the measurement of $c\bar{c}$ and $b\bar{b}$ decay electron yields from $p$+$p$ collisions at $\sqrt{s}$=200 GeV and 62 GeV. PHENIX published electron yield extends to $p_T$ = 8.5 GeV/c for 200 GeV $p$+$p$ data sample. We propose to extend $p_T$ range of measurement to beyond 10 GeV/c where the source of electrons will begin to be dominated by $b\bar{b}$ decays. Conversely, high $p_T$ electrons in 62 GeV $p$+$p$ collisions should have little contribution from $b\bar{b}$. For this we use a new method to statistically subtract the background from charged pions that start to fire the Ring Imaging CHerenkov detector above 5 GeV/c as well as the addition of data from the higher integrated luminosity in 2006 run.