Searching new physics in B decays

por Rusa Mandal (IFIC)

miércoles 27 jun. 2018 12:00 → 13:00 Europe/Madrid

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

The rare decays of B mesons are very sensitive probe for the possible existence of beyond standard model particles. First we discuss the semileptonic mode B → K^* l⁺l^- where the rich angular analysis allows to access large number of observables at experiments. In light of recent LHCb data, we show an evidence of right-handed current derived at the kinematic endpoint limit. The approach adopted in our work parametrizes the standard model (SM) effects using the symmetry arguments and has minimal dependency on hadronic parameters.

Secondly, in view of several hints of lepton non universality, observed in B meson decays, we find that with a minimal modification to the SM in terms of an effective theory, the charged as well as neutral current anomalies can well be explained by introducing just two new parameters. This class of operators predict some interesting signatures both in the context of B decays as well as high-energy collisions.

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IFIC_Rusa.pdf