First Measurement of the Angular Coefficients of Drell-Yan e(+)e(-) Pairs in the Z Mass Region from p(p)over-bar Collisions at root s=1.96 TeV

Abstract

We report on the first measurement of the angular distributions of final state electrons in pp ! =Z ! eþe þ X events produced in the Z boson mass region at ffiffiffis p ¼ 1:96 TeV. The data sample collected by the CDF II detector for this result corresponds to 2:1 fb1 of integrated luminosity. The angular distributions are studied as a function of the transverse momentum of the electron-positron pair and show good agreement with the Lam-Tung relation,