B?K*?? and other b?s?? transitions : a theory status report
Sébastien Descotes-Genon
LPT, Orsay
Lundi 13/06/2016, 11:00
Bat 141, salle André Berthelot (143) Masque recommandé, CEA Paris-Saclay

The flavour-changing b?s?+?? transitions (?=e,?) are powerful probes of the Standard Model, for which recent LHCb data exhibit an interesting pattern of deviations. I will recall the current situation for the angular distribution of the B?K*(?K?)?+?? decay, as well as for other outstanding b?s?+?? transitions. I will discuss the theoretical approaches used to determine the Standard Model predictions for these observables and some of their shortcomings. I will show how a global fit of b?s?+?? observables favours New Physics scenarios consistently with a high significance, and I will present a few specific models following these scenarios. I will also discuss a few alternative explanations proposed in the literature, before giving some short-term perspectives for these decays.

Contact : Emmanuel MOULIN


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