Electroweak radiative corrections to neutral-current Drell-Yan processes at hadron colliders

被引：204

作者：

Baur, U ^{[1
]}

Brein, O

Hollik, W

Schappacher, C

Wackeroth, D

机构：

[1] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

[2] Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany

[3] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.65.033007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the complete electroweak 0(alpha) corrections to pp --> l(+) l(-)X (l = e, mu) in the standard model (SM) of electroweak interactions. They comprise weak and photonic virtual one-loop corrections as well as real photon radiation to the parton-level processes q(q) over bar --> gamma, Z-->l(+) l(-). We study in detail the effect of the radiative corrections on the l(+) l(-) invariant mass distribution, the cross section in the Z boson resonance region, and on the forward-backward asymmetry A(FB) at the Fermilab Tevatron and the CERN Large Hadron Collider. The weak corrections are found to increase the Z boson cross section by about 1%, but have little effect on the forward-backward asymmetry in the Z peak region. Threshold effects of the W box diagrams lead to pronounced effects in A(FB) at m(l(+) l(-))approximate to160 GeV which, however, will be difficult to observe experimentally. At high dilepton invariant masses, the nonfactorizable weak corrections are found to become large.

引用

页数：19

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