The process of charged Higgs production in association with a top quark at the LHC has been calculated at the complete next-to-leading-order electroweak level both in a two-Higgs-doublet model and in the minimal supersymmetric standard model, assuming a minimal supergravity breaking scheme. We have numerically explored the size of the one-loop corrections in two typical supersymmetric scenarios, with particular attention to the tan beta dependence, and we have found that they remain perturbatively small but possibly sizable, reaching a 20% limit for extreme values of tan beta, when the complete set of Feynman diagrams is taken into account.
Associated production of a charged Higgs boson and top quark at LHC: The role of the complete electroweak supersymmetric contribution
Panizzi L;
2009-01-01
Abstract
The process of charged Higgs production in association with a top quark at the LHC has been calculated at the complete next-to-leading-order electroweak level both in a two-Higgs-doublet model and in the minimal supersymmetric standard model, assuming a minimal supergravity breaking scheme. We have numerically explored the size of the one-loop corrections in two typical supersymmetric scenarios, with particular attention to the tan beta dependence, and we have found that they remain perturbatively small but possibly sizable, reaching a 20% limit for extreme values of tan beta, when the complete set of Feynman diagrams is taken into account.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
