First Measurement of the Angular Coefficients of Drell-Yan e^ + e^ - Pairs in the Z Mass Region from pp over ¯ Collisions at sqrt s =1.96 TeV.
| Author | |
|---|---|
| Abstract |
:
We report on the first measurement of the angular distributions of final state electrons in pp[over ¯]→γ^{*}/Z→e^{+}e^{-}+X events produced in the Z boson mass region at sqrt[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. |
| Year of Publication |
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1969
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| Journal |
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Physical review letters
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| Volume |
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106
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| Issue |
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24
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| Number of Pages |
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241801
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| Date Published |
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2011 Jun 17
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| ISSN Number |
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0031-9007
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| URL |
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http://link.aps.org/abstract/PRL/v106/p241801
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| Short Title |
:
First Measurement of the Angular Coefficients of DrellYan e e Pa
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