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