Four-fermion production at gamma gamma colliders: 2. Radiative corrections in double-pole approximation

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dc.creatorBredenstein, A.
dc.creatorDittmaier, S.
dc.creatorRoth, M.
dc.date2005-06-01
dc.date.accessioned2026-07-07T12:25:07Z
dc.date.available2026-07-07T12:25:07Z
dc.descriptionThe O(alpha) electroweak radiative corrections to gamma gamma --> WW --> 4f within the electroweak Standard Model are calculated in double-pole approximation (DPA). Virtual corrections are treated in DPA, leading to a classification into factorizable and non-factorizable contributions, and real-photonic corrections are based on complete lowest-order matrix elements for gamma gamma --> 4f + gamma. Soft and collinear singularities appearing in the virtual and real corrections are combined alternatively in two different ways, namely by using the dipole subtraction method or by applying phase-space slicing. The radiative corrections are implemented in a Monte Carlo generator called COFFERgammagamma, which optionally includes anomalous triple and quartic gauge-boson couplings in addition and performs a convolution over realistic spectra of the photon beams. A detailed survey of numerical results comprises O(alpha) corrections to integrated cross sections as well as to angular, energy, and invariant-mass distributions. Particular attention is paid to the issue of collinear-safety in the observables.
dc.description42 pages, latex, 34 postscript figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0506005
dc.identifierhttp://arxiv.org/abs/hep-ph/0506005
dc.identifierEur.Phys.J.C44:27-49,2005
dc.identifierdoi:10.1140/epjc/s2005-02343-5
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214523
dc.subjectHigh Energy Physics - Phenomenology
dc.titleFour-fermion production at gamma gamma colliders: 2. Radiative corrections in double-pole approximation
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