2019 Impact factor 4.389
Particles and Fields
Eur. Phys. J. C 9, 449-457
DOI 10.1007/s100529900070

Screened-Coulomb ansatz for the nonfactorizable radiative corrections to off-shell W+W- production

A.P. Chapovsky1 - V.A. Khoze2

1 Instituut-Lorentz, University of Leiden, The Netherlands (e-mail: chapovsk@lorentz.leidenuniv.nl)
2 INFN-Laboratori Nazionali di Frascati, P.O. Box 13, I-00044 Frascati (Roma), Italy (e-mail: khoze@cern.ch)

Received: 15 February 1999 / Published online: 18 June 1999

We demonstrate that the results of the complete first-order calculation of the nonfactorizable QED corrections to the single-inclusive cross sections for $e^{+}e^{-}\to W^{+}W^{-}\to4$ fermions can be reproduced by a simple, physically motivated ansatz. The ansatz allows us to effectively take into account the screening role of the non-Coulomb radiative mechanisms by introducing a dampening factor in front of the width-dependent part of the known first-order Coulomb correction, the so-called screened-Coulomb ansatz.

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