Correlations of non-photonic electrons with charged hadrons are studied using the PYTHIA Monte Carlo event generator in p+p collisions at √s NN = 200 GeV. We propose experimental methods to estimate the relative contributions to non-photonic electrons from charm and bottom decays. We present the measurement of azimuthal correlations between non-photonic electrons and charged hadrons in p+p collisions at √s NN = 200 GeV from STAR. The results are compared to PYTHIA simulations to estimate the relative contributions of D and B meson semi-lepton...