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Particles and Fields

Eur. Phys. J. C 25, 405-411 (2002)
DOI: 10.1007/s10052-002-01023-x

Photoproduction of W bosons at HERA: QCD corrections

K.-P.O. Diener1, Ch. Schwanenberger2 and M. Spira2

1  Institut für Theoretische Physik, Universität Karlsruhe, 76128 Karlsruhe, Germany
2  Paul Scherrer Institut PSI, 5232 Villigen PSI, Switzerland

(Received: 18 April 2002 / Published online: 30 August 2002 )

W bosons can be produced in the channels $e^\pm p\to W^\pm + X$ at HERA thus allowing to probe for anomalous trilinear couplings among the gauge bosons. We discuss the next-to-leading order (NLO) QCD corrections to the photoproduction of W bosons with finite transverse momentum at HERA. The higher-order QCD corrections reduce the factorization scale dependence significantly and modify the leading-order (LO) cross sections by $\pm {\cal O}(10\%)$.

© Società Italiana di Fisica, Springer-Verlag 2002