Eur. Phys. J. C 24, 373-383 (2002)
DOI: 10.1007/s100520200948
Predictions for
production at LEP
D. Bardin1, S. Jadach2, 3, 4, T. Riemann2 and Z. Was3
1 Lab. of Nuclear Problems, JINR, 141980 Dubna, Russia
2 Deutsches Elektronen-Synchrotron DESY, 15738 Zeuthen, Germany
3 Institute of Nuclear Physics, ul. Kawiory 26a, 30-055 Cracow, Poland
4 CERN, Theory Division, 1211 Geneva 23, Switzerland
(Received: 30 October 2001 / Revised version: 5 March 2002 / Published online: 22 May 2002 - © Springer-Verlag / Società Italiana di Fisica 2002 )
Abstract
We study predictions for the reaction
.
The complete one-loop corrections are taken into account and
higher order contributions, in particular those for the observed real photons,
are added whenever necessary.
The event generator
MC, a general-purpose
Monte Carlo generator for the process
based on
the
method of exclusive exponentiation, is used as the environment.
We extend its applicability to the process
,
,
where the observation of at least
a single
is required.
The exponentiation is implemented in much the same way
as for the
s-channel process alone.
In particular, all photonic effects present in the case
of
W exchange, which cannot
be included in the
s-channel exponentiation scheme,
are calculated to a finite order only.
The real hard photon matrix element is calculated up to
.
Leading logarithmic contributions of the two-loop
corrections and one-loop photonic corrections accompanying real
single-photon emission are included.
The electroweak corrections are calculated with the DIZET
library of the ZFITTER package.
Numerical tests and predictions for typical observables are presented.
© Società Italiana di Fisica, Springer-Verlag 2002