Seminari INFN

Extraction of $V_{cb}$ from $B\rightarrow D^{*}l\nu$ and SM prediction of $R(D^{*})$

by S. Schacht (Universita' di Torino)

Europe/Rome
Aula Conversi (Dip. di Fisica - Edificio G. Marconi)

Aula Conversi

Dip. di Fisica - Edificio G. Marconi

Description
We point out the impact of theory input on the extraction of $V_{cb}$ from $B\rightarrow D^{*}l\nu$. Including Heavy Quark Effective Theory (HQET) input in a conservative way through the so-called strong unitarity bounds, we determine $V_{cb}$ from recent preliminary Belle data. Furthermore, we give an updated Standard Model (SM) prediction for the Lepton Flavor Nonuniversality observable $R(D^{*})$, which can be used for precision tests of the SM.