Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Lepton Universality tests using semileptonic b-hadron decays

Jul 8, 2022, 3:38 PM
17m
Room 9 (Indaco)

Room 9 (Indaco)

Parallel Talk Quark and Lepton Flavour Physics Quark and Lepton Flavour Physics

Speaker

Resmi Puthumanaillam (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)

Description

Semileptonic b-hadron decays to a final state with a heavy lepton are sensitive to new couplings, such as those generated by charged Higgses or Leptoquarks. The B-Factories and LHCb have performed measurements of these decays, using different approaches and techniques. A global average of measurements of ratios of branching fractions to final states with taus or light leptons shows a discrepancy with the Standard Model expectations above 3 standard deviations. A measurement of the combined ratios BF(B->D0 tau nu)/BF(B->D0 mu nu) and BF(B->D tau nu)/BF(B->Dmu nu) using 3/fb collected by LHCb in Run1, is presented, as well as a first measurement of the ratio R(Lc) = BF(Lb -> Lc tau nu) / BF(Lc -> Lc mu nu) using the same dataset.

In-person participation Yes

Primary author

Resmi Puthumanaillam (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)

Presentation materials