17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

Beyond-SM searches in B -> D(*) tau nu and rare decays at BaBar

19 Jul 2013, 10:00
D1 (KTH Campus)


KTH Campus

Talk presentation Flavour Physics and Fundamental Symmetries Flavour Physics and fundamental symmetries


Eli Ben Haim (Centre National de la Recherche Scientifique (FR))


We present the measurement of  the B -> D(*) tau nu decay, which is sensitive at tree level to New Physics in the form of a charged Higgs Boson. The measured branching fraction is 3.4 sigma  larger than the SM predictions, and excludes the 2HDM of type 2 at 99.88% confidence for all tan(beta)/mHiggs values. Additional studies of the momentum transferred to the lepton system show that the result can be accommodated by more general  two-Higgs-Doublet models. Searches for rare decays sensitive to New Physics, as  B -> K(*) nu anti-nu, are also reported.

Primary author

Fabio Anulli (Universita e INFN, Roma I (IT))

Presentation Materials