Di-lepton production in p+p collisions at $\sqrt{s_{_{NN}}} = 200$ GeV

Ultra-relativistic heavy ion collisions provide a unique environment to study properties of strongly interacting matter at high temperature and high energy density. One of the crucial probes of this strongly interacting matter are dilepton measurements at low ($M_{ll}<1.1 GeV/c2$) and intermediate ($1.1