Seminars IFIC

# #StudentSeminar: Flavour Anomalies in b->cτν transitions

## by Ana Peñuelas Martínez (IFIC-UV)

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

### 1001-Primera-1-1-1 - Paterna. Seminario

#### Universe

60
Description

In this talk I will give a general overview of the status of flavour anomalies. Then, focusing on $b \to c \tau \nu$ transitions I will show you recent results of a general model-independent analysis, including measurements of $\mathcal{R}_D, \mathcal{R}_{D^*}$, their $q^2$ differential distributions, the recently measured longitudinal $D^*$ polarization $F_L^{D^*}$ and constraints from the $B_c \to \tau \bar{\nu}_{\tau}$ lifetime, each of which has significant impact on the fit. A global fit to a general set of Wilson coefficients of an effective low-energy Hamiltonian is presented, the solutions of which are interpreted in terms of hypothetical new-physics mediators.

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