Speaker
Vikas Bansal
(PNNL)
Description
I will review the current status of measurements involving semi-tauonic B
meson decay at the B-factories. I will briefly touch upon the experimental
methods and highlight the importance of backgrounds especially from poorly
understood D** in this study. Perhaps this can also shed some light on the
discrepancy in BaBar’s measurement of ratio of semi-tauonic and
semi-leptonic (e / \mu) modes of B decay from the Standard Model (SM) at
3.4 \sigma significance. I will also pose a question on which New Physics
(NP) modeling may be most sensitive in the semi-tauonic channel.
