## Event

Title:
EPT Seminar
Calendar:
Date:
Mon, Mar 27, 2017 4:00 pm - 5:30 pm
Location:
PSC 3150

Price:
Array $Copy To: ## Description Speaker: Diptimoy Ghosh Speaker Institution: Weizmann Institute of Science Title: Hints of new physics in semi-leptonic B-meson decays Abstract: In recent years, a number of interesting signals of potential new physics in semi-leptonic B-meson decays have been reported both by the B-factories as well as the LHCb. In this talk, I will discuss these observations with a particular emphasis on the observable$R_{D^*}$, the ratio of the branching fraction of$\bar{B} \to D^* \tau \bar{
u}_\tau$to that of$\bar{B}
\to D^* \ell \bar{
u}_\ell (\ell = \mu, e )\$, which shows a 3.3 sigma deviation
from the Standard Model prediction. I will present an effective field theory
analysis of these potential new physics signals and discuss possible ways to distinguish the various operators.

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