EP Seminar

Evidence for an excess of B -> D(*) Tau Nu decays and implications for two Higgs doublet models

Name: Evidence for an excess of B -> D(*) Tau Nu decays and implications for two Higgs doublet models
Start: 2012-09-04T11:00:00+02:00
End: 2012-09-04T12:00:00+02:00
Location: CERN

by Manuel Franco Sevilla (SLAC)

Tuesday 4 Sept 2012, 11:00 → 12:00 Europe/Zurich

500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

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Description

Based on the full BaBar data sample, we report improved measurements of the ratios R(D(*)) = B(B -> D(*) Tau Nu)/B(B -> D(*) l Nu), where l is either e or mu. These ratios are sensitive to new physics contributions in the form of a charged Higgs boson. We measure R(D) = 0.440 +- 0.058 +- 0.042 and R(D*) = 0.332 +- 0.024 +- 0.018, which exceed the Standard Model expectations by 2.0 sigma and 2.7 sigma, respectively. Taken together, our results disagree with these expectations at the 3.4 sigma level. This excess cannot be explained by a charged Higgs boson in the type II two-Higgs-doublet model.

Organised by

C. Lourenco, M. Mangano, G. Unal......................... Tea and Coffee will be served at 10h30

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Evidence for an excess of B -> D(*) Tau Nu decays and implications for two Higgs doublet models

by Manuel Franco Sevilla (SLAC)

500/1-001 - Main Auditorium

CERN