2022 Impact factor 4.4
Particles and Fields
Eur. Phys. J. C 18, 73-82
DOI 10.1007/s100520000515

Impact of the W boson decay width
on photon bremsstrahlung accompanying W pair production

A.P. Chapovsky1 - V.A. Khoze2 - W.J. Stirling1,2

1 Department of Physics, University of Durham, Durham, DH1 3LE, UK
2 Department of Mathematical Sciences, University of Durham, Durham, DH1 3LE, UK

Received: 19 July 2000 / Published online: 13 November 2000 - © Springer-Verlag 2000

The bremsstrahlung spectrum of photons accompanying W pair production depends on the decay width of the unstable W bosons. The dependence arises from the interference between emission at different stages of the production and decay process. We present a quantitative discussion of this effect, and consider the implications for measurements at LEP2 and LC energies.

Copyright Società Italiana di Fisica, Springer-Verlag 2000