Dominant NNLO corrections to four-fermion production near the W-pair production threshold

被引：27

作者：

Actis, S. ^{[1
]}

Beneke, M. ^{[1
]}

Falgari, P. ^{[1
]}

Schwinn, C. ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany

来源：

NUCLEAR PHYSICS B | 2009年 / 807卷 / 1-2期

关键词：

ELECTROWEAK RADIATIVE-CORRECTIONS; QUARK-ANTIQUARK POTENTIALS; PRODUCTION NEAR-THRESHOLD; E(+)E(-) INTERACTIONS; O(ALPHA) CORRECTIONS; FERMION PROCESSES; CHARGED-CURRENT; CROSS-SECTION; MASS; COLLISIONS;

D O I：

10.1016/j.nuclphysb.2008.08.006

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We calculate the parametrically dominant next-to-next-to-leading order corrections to four-fermion production e(-)e(+) --> mu(-)(nu) over bar (mu)u (d) over bar + X at centre-of-mass energies near the W-pair production threshold employing the method of unstable-particle effective theory. In total the correction is small, leading to a shift of 3 MeV in the W-mass measurement. We also discuss the implementation of realistic cuts and provide a result for the interference of single-Coulomb and soft radiative corrections that can easily be extended to include an arbitrary number of Coulomb photons. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1 / 32

页数：32

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