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First Measurement of the Angular Coefficients of Drell-Yan e+e Pairs in the Z Mass Region from pp Collisions at √s=1.96  TeV

ContributorsGarcia Navarro, Jose Enrique; CDF Collaboration
Published inPhysical review letters, vol. 106, no. 24, 241801
Publication date2011
Abstract

We report on the first measurement of the angular distributions of final state electrons in pp→γ∗/Z→e+e−+X events produced in the Z boson mass region at s√=1.96  TeV. The data sample collected by the CDF II detector for this result corresponds to 2.1  fb−1 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, consistent with a spin-1 description of the gluon, and demonstrate that, at high values of the transverse momentum, Z bosons are produced via quark-antiquark annihilation and quark-gluon Compton processes.

Citation (ISO format)
GARCIA NAVARRO, Jose Enrique. First Measurement of the Angular Coefficients of Drell-Yan <em>e<sup>+</sup>e<sup>−</sup></em> Pairs in the <em>Z</em> Mass Region from <em>pp</em> Collisions at √s=1.96  TeV. In: Physical review letters, 2011, vol. 106, n° 24, p. 241801. doi: 10.1103/PhysRevLett.106.241801
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ISSN of the journal0031-9007
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