B-K*mu mu and other b->sll rare transitions : a theory status report

par Sébastien Descotes-Genon (LPT Orsay)

vendredi 20 mai 2016, 14:30 → 15:30 Europe/Paris

Salle 101 (LAL)

Recent LHCb data on b→sℓ+ℓ− transitions (ℓ=e,μ) exhibit an interesting pattern of deviations from Standard Model expectations. I will recall the current situation for the angular distribution of the B→K∗(→Kπ)μ+μ− decay, as well as for other outstanding b→sℓ+ℓ− transitions. I will discuss the theoretical approaches used to determine the Standard Model predictions for these observables and some of their shortcomings, before explaining how the observed deviations can be analysed in a model-independent framework. I will show how a global fit of b→sℓ+ℓ− observables favours several New Physics scenarios with high significances, some of them being particularly relevant for model building. I will discuss alternative explanations for these deviations, as well as ways of testing the robustness of these results.

Poster Sem_20160520.pdf

Transparents slides_lal.pdf