Speaker
Guy Henri Maurice Wormser
(Université Paris-Saclay (FR))
Description
The semileptonic b-hadron decays with a heavy lepton are sensitive to new couplings like those generated by charged Higgses or Leptoquarks. The B-Factories and LHCb have previously performed various measurements of these decays, using different approaches and techniques. A global average of these measurements shows a discrepancy with the Standard Model expectations, which is above 3 standard deviations. A measurement of the combined ratios BF($B\to D \tau \nu$)/BF($B\to D \mu \nu$) and BF($B\to D^* \tau \nu$)/BF($B\to D^*\mu \nu$) using 3/fb collected by LHCb in Run1, is presented.
Author
Sebastian Neubert
(University of Bonn (DE))
