Hard Photons in W Pair Production at LEP 2

Details Hard Photons in W Pair Production at LEP 2 Hard Photons in W Pair Production at LEP 2

1995-03-16

arxiv.org/abs/hep-ph/9503353v3

Nucl.Phys. B470 (1996) 71-83

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, latex+elsart, full ps file available at http://rulgm4.LeidenUniv.nl/preprints.html or at ftp://rulgm4.LeidenUniv.n

Scientific paper

The properties of hard photon radiation in $W$ pair production at LEP 2 are studied, with emphasis on the energy loss relevant to the W mass measurement. We use a combination of the exact 1-photon matrix element and leading logarithmic structure functions. Defining unobservable, observable and initial state photons in the phase space, it is shown that neither the one-photon matrix element nor the leading logarithmic structure functions alone give an adequate description of the energy loss due to observable or initial state photons. An event generator based on these calculations is available.

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