Eur. Phys. J. C 20, 253-258
DOI: 10.1007/s100520100660

QED radiative correction for the single-W production using a parton shower method

Y. Kurihara¹, J. Fujimoto¹, T. Ishikawa¹, Y. Shimizu¹, K. Kato², K. Tobimatsu² and T. Munehisa<sup>3

1</sup>  High Energy Accelerator Research Organization, Tsukuba, 305-0801, Japan
²  Kogakuin University, Shinjuku, Tokyo 163-8677, Japan
³  Yamanashi University, Yamanashi 400-8510, Japan

(Received: 22 February 2001 / Published online: 11 May 2001 -© Springer-Verlag / Società Italiana di Fisica 2001)

Abstract
A parton shower method for the photonic radiative correction is applied to single W-boson production processes. The energy scale for the evolution of the parton shower is determined so that the correct soft-photon emission is reproduced. Photon spectra radiated from the partons are compared with those from the exact matrix elements, and show a good agreement. Possible errors due to an inappropriate energy-scale selection or due to the ambiguity of the energy-scale determination are also discussed, particularly for the measurements on triple gauge couplings.

© Società Italiana di Fisica, Springer-Verlag 2001