Speaker
Description
Dilepton spectra are a classic probe to study ultra-relativistic heavy ion collisions. At RHIC energies, the dimuon continuum is dominated by correlated pairs from charm and bottom semi-leptonic decays and the Drell-Yan process. No Drell-Yan measurement had been made at sqrt(sNN)= 200 GeV to date. A precise measurement of the Drell-Yan cross-section can provide constraints to PDFs. The dimuon spectra also contain information on heavy flavor angular correlations, which can constrain the relative contributions from different heavy flavor production mechanisms. Studying heavy flavor correlations in p+Au collisions may provide further insight to understanding cold nuclear matter effects. In this talk, we report measurements of µµ pairs from charm, bottom, and Drell-Yan in p+p and p+Au collisions at sqrt(sNN)= 200 GeV. A further shape analysis is applied to the heavy flavor pair correlations to extract the ratios of leading and next-to-leading order contributions.
