Speaker
Mr
Gilberto Tetlalmatzi-Xolocotz
(Durham University)
Description
Motivated by the recent measurement of the dimuon asymmetry by the D{\O} collaboration, which could be interpreted as an enhanced decay rate difference in the neutral B_d-meson system, we investigate the possible size of new-physics contributions to \Delta\Gamma_d. In particular, we perform model-independent studies of non-standard effects associated to the dimension-six current-current operators (d^{-}p)(p^{-}′b) with p,p′=u,c as well as (d^{-}b)(\tau^{-}\tau). In both cases we find that for certain flavour or Lorentz structures of the operators sizable deviations of \Delta \Gamma_d away from the Standard Model expectation cannot be excluded in a model-independent fashion.
Primary author
Mr
Gilberto Tetlalmatzi-Xolocotz
(Durham University)
