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Non-factorizable photonic corrections to e+e- RARR;WW→4 fermions

被引：95
作者：
Denner, A [1 ]
Dittmaier, S
Roth, M
机构：
[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
[3] ETH Honggerberg, Inst Theoret Phys, CH-8093 Zurich, Switzerland
来源：
NUCLEAR PHYSICS B | 1998年 / 519卷 / 1-2期
关键词：
W-pair production; electroweak radiative corrections; numerical calculations; factorization violation; Z-pair production; pole expansion;
D O I：
10.1016/S0550-3213(98)00046-7
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 study the non-factorizable corrections to W-pair-mediated four-fermion production in e(+)e(-) annihilation in double-pole approximation. We show how these corrections can be combined with the known corrections to the production and the decay of on-shell W-boson pairs, and how the full off-shell Coulomb singularity is included. Moreover, we find that the actual form of the real non-factorizable corrections depends on the parametrization of phase space, more precisely, on the definition of the invariant masses of the resonant W bosons. For the usual parametrization the full analytical results for the non-factorizable corrections are presented. Our analytical and numerical results for the non-factorizable corrections agree with a recent calculation, which was found to differ from a previous one. The detailed numerical discussion covers the invariant-mass distribution, various angular distributions, and the lepton-energy distribution for leptonic final states. (C) 1998 Elsevier Science B.V.
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页码：39 / 84
页数：46
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