Vikas Bansal (PNNL)
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.