DOI 10.1007/s100529900070
Screened-Coulomb ansatz for the nonfactorizable radiative corrections to off-shell W+W- production
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
Abstract
We demonstrate that the results of the complete first-order calculation
of the nonfactorizable QED corrections to the single-inclusive cross sections
for 
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.
Copyright Springer-Verlag
