Gluon induced contributions to WZ and Wγ production at NNLO
In: http://arxiv.org/pdf/hep-ph/0202132v1.pdf, 2002
Online
academicJournal
Zugriff:
We calculate the contribution of the partonic processes gg → WZq¯q and gg → Wγq¯q to WZ and Wγ pair production at hadron colliders, including anomalous triple gauge-boson couplings. We use the helicity method and include the decay of the W and Z-boson into leptons in the narrow-width approximation. In order to integrate over the q¯q final state phase space we use an extended version of the subtraction method to NNLO and remove collinear singularities explicitly. Due to the large gluon density at low x, the gluon induced terms of vector-boson pair production are expected to be the dominant NNLO QCD correction, relevant at LHC energies. However, we show that due to a cancellation they turn out to provide a rather small contribution, anticipating A direct test of the non-abelian nature of the weak interactions can be made through the study of vector-boson pair production. These processes already involve triple gaugeboson couplings at tree level and, therefore, offer a promising framework for their study. In the Standard Model, the triple gauge-boson couplings are completely fixed by gauge
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Gluon induced contributions to WZ and Wγ production at NNLO
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Autor/in / Beteiligte Person: | K. L. Adamson, A ; D. De Florian, B ; A. Signer, A ; The Pennsylvania State University CiteSeerX Archives |
Link: | |
Zeitschrift: | http://arxiv.org/pdf/hep-ph/0202132v1.pdf, 2002 |
Veröffentlichung: | 2002 |
Medientyp: | academicJournal |
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