DPF 2013

B->D(*) tau nu and constraints on charged Higgs models

16 Aug 2013, 10:50

20m

Classroom Unit 2 (University of California, Santa Cruz)

oral presentation Physics Beyond the Standard Model Physics Beyond the Standard Model

Speaker

Mr Daniel Chao (Caltech)

Description

We present the measurement of B -> D(*) tau nu decay, which is sensitive at tree level to New Physics contributions 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 with a 99.8% confidence level for any value of tan(beta)/mHiggs. Additional studies of the momentum transfered to the lepton system show that the result can be accomodated by more general two-Higgs-Doublet models.

Presentation materials

Slides

dchao_dpf2013.pdf