Research Papers in Physics and Astronomy


Date of this Version



Published by American Physical Society. Phys. Rev. Lett. 94, 091803 (2005). Copyright © 2005 American Physical Society. Permission to use.


We report the first measurements of inclusive W and Z cross sections times leptonic branching ratios for pp̅ collisions at √s =1.96 TeV, based on their decays to electrons and muons. The data correspond to an integrated luminosity of 72 pb-1 recorded with the CDF detector at the Fermilab Tevatron. We test e-µ universality in W decays, and we measure the ratio of leptonic W and Z rates from which the leptonic branching fraction B (W→ ℓν) can be extracted as well as an indirect value for the total width of the W and the Cabibbo-Kobayashi-Maskawa matrix element, |VCS|.

Included in

Physics Commons