Abstract
We report measurements of the charge-separated and production cross sections at mid-rapidity in proton-proton collisions at . These results are based on of data recorded in 2009 by the STAR detector at RHIC. Production cross sections for bosons that decay via the channel were measured to be , and . For production, was measured for di-lepton invariant masses between 70 and . First measurements of the cross section ratio, , at are also reported. Theoretical predictions, calculated using recent parton distribution functions, are found to agree with the measured cross sections.
5 More- Received 13 December 2011
DOI:https://doi.org/10.1103/PhysRevD.85.092010
© 2012 American Physical Society