First Measurement of the Angular Coefficients of Drell-Yan e⁺e⁻ Pairs in the Z Mass Region from pp̄ Collisions at √s=1.96 TeV
Journal Article
·
· Physical Review Letters
We report on the first measurement of the angular distributions of final state electrons in pp̄→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.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1099596
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 106 Journal Issue: 24; ISSN 0031-9007
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 44 works
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