Electroweak Sudakov Logarithms and Real Gauge-Boson Radiation in the TeV Region

Details Electroweak Sudakov Logarithms and Real Gauge-Boson Radiation in the TeV Region Electroweak Sudakov Logarithms and Real Gauge-Boson Radiation in the TeV Region

2010-04-23

arxiv.org/abs/1004.4117v1

Eur.Phys.J.C70:659-671,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 4 figures

Scientific paper

10.1140/epjc/s10052-010-1489-x

Electroweak radiative corrections give rise to large negative, double-logarithmically enhanced corrections in the TeV region. These are partly compensated by real radiation and, moreover, affected by selecting isospin-noninvariant external states. We investigate the impact of real gauge boson radiation more quantitatively by considering different restricted final state configurations. We consider successively a massive abelian gauge theory, a spontaneously broken SU(2) theory and the electroweak Standard Model. We find that details of the choice of the phase space cuts, in particular whether a fraction of collinear and soft radiation is included, have a strong impact on the relative amount of real and virtual corrections.

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