Pheno club - Effective field theory for top quark physics at NLO accuracy

by Dr Cen Zhang (UCL - CP3)

Wednesday 23 Apr 2014, 10:30 → 11:30 Europe/Brussels

E/3rd floor-E.361 - Meeting room (E.361) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

Top quark processes potentially suffer from a large uncertainty at leading order in QCD. To search for new physics in top quark processes, it is desirable to have a model-independent approach at the NLO accuracy. Effective field theory provides a framework in which the radiative corrections to new interactions can be consistently included, but the analysis can be complicated due to operator mixing effects. I will discuss the effective field theory approach to top-quark physics, with a focus on NLO calculation. In particular I will discuss its applications in precision electroweak tests, top-quark decay processes and top-quark FCNC production.