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28-31 October 2014
Waldhotel Zollernblick
Europe/Berlin timezone

New Physics in \Delta \Gamma_d

31 Oct 2014, 11:50
Waldhotel Zollernblick

Waldhotel Zollernblick

Am Zollernblick 1 72250 Freudenstadt - Lauterbad


Mr. Gilberto Tetlalmatzi-Xolocotz (Durham University)


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)

Presentation Materials

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