WIN2019 The 27th International Workshop on Weak Interactions and Neutrinos.

Lepton Flavour Universality in B Decays and Other Recent Results at Belle

5 giu 2019, 15:00

30m

Giulia Centre (Bari)

Oral Flavor and Precision Physics Flavor and Precision Physics

Relatore

Maria Rozanska (Krakow U.)

Descrizione

Indications for lepton flavour universality violation in the mode B -> D(*) tau nu and B -> K(*) l+ l- have been of interest
and can be a hint for the New Physics effect.
We report new measurements on R(D) and R(D*) (branching ratio of B -> D(*) tau nu over B -> D(*) l nu where l + e, mu) the semi-leptonic tag method,
nd on R(K*) (branching ratio of B -> K* mu+ mu- over K* e+ e-).
A few more results from Belle experiment are also covered.
The analyses are based on the full data set recorded by the Belle detector at the Υ(4S) resonance containing 772 million BBbar pairs from e+ e- collisions produced by the KEKB collider.

Collaboration name

Belle

Materiali di presentazione

win_2019_mr.pdf