Electroweak radiative corrections toWboson production in hadronic collisions

Abstract

The O͑␣͒ electroweak radiative corrections to the process p p h→W Ϯ →l Ϯ (l ϭe,) are calculated. The O͑␣͒ corrections can be decomposed into separate gauge invariant contributions to the W boson production and decay processes. Factorizing the collinear singularity associated with initial state photon radiation into the parton distribution functions, we find that initial state corrections have a significantly smaller effect than final state radiative corrections. We study in detail the effect of electroweak radiative corrections on a number of interesting observables: the W transverse mass distribution, the W to Z transverse mass ratio, the charge asymmetry of leptons in W→l decays, as well as the W production cross section and the W to Z cross section ratio. We also investigate how experimental lepton identification requirements change the effect of the electroweak corrections.

Precise prediction forMWin the MSSM

“…The Tevatron data will reduce the experimental error to about δM W = 20 MeV [7], while at the LHC an accuracy of about δM W = 15 MeV [8] is expected. At the GigaZ option of a linear e + e − collider, a precision of δM W = 7 MeV can be achieved [9,10].…”

Electroweak radiative corrections to weak boson production at hadron colliders

“…Our results show that, for future precision measurements the full electroweak O(α) corrections and probably also multiple photon radiation effects should be taken into account. The calculation of the non-resonant O(α) corrections to W production has recently been completed [ 13] (see also Ref. [ 12]).…”

“…The non-resonant contributions, which include those originating from the W Z box diagrams, vanish forŝ = M 2 W , and thus were not included in Ref. [ 9]. For precision physics away from the W pole, however, the non-resonant corrections must be included.…”

“…Separation cuts and lepton identification requirements to simulate the detector acceptance as described in Ref. [ 9] are taken into account in Fig. 3.…”

“…[ 8,9] and [ 10,11,12,13], concentrating on photon radiation effects and the impact of non-resonant weak corrections on the W width measurement.…”