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FCNC top quark production via anomalous tqV couplings beyond leading order.
OAI: oai:www.repository.cam.ac.uk:1810/224313
Published by: HEP, Cavendish Laboratory, University of Cambridge
Abstract
We calculate flavor-changing neutral-current (FCNC) processes involving top-quark
production via anomalous tqV couplings at the Tevatron and HERA colliders. We cover
the FCNC processes p¯p → tZ, p¯p → t
, p¯p → tt, and ep → et. We go beyond leading order
and include the effects of soft-gluon corrections through next-to-next-to-leading order. We
demonstrate the stabilisation of the cross section with respect to the variation of QCD
scale, and we investigate the reach of the Tevatron and HERA colliders.