Speaker
Rupak Dutta
(University of Kentucky)
Description
CKM mechanism of a single CP-violating phase has been confirmed by
various $B$ decay data over the decade. Yet, the existence of new
physics effects can not be ruled out.
In this context,
we consider the branching ratios and CP asymmetries in two theoretically
clean modes, namely in $B\to f_0(980) K_S$ and $B \to \phi K_S$ decays,
to the end of determining the deviation of time dependent CP asymmetry
from $\sin(2\beta)$ arising from Standard
Model physics. We use the QCD factorization framework for the decay
amplitudes and employ a parameter scan to probe a broad range of
theoretical models, exploring variations in the inputs at the 3$\sigma$
level and the ill-known ${\cal O}(1/M_B)$ corrections with $100\%$
uncertainty. The excursions in time dependent CP
asymmetry from
$\sin(2\beta)$ are under sufficient theoretical control to enable the
interpretation
of experimental results of much higher precision.
Authors
Rupak Dutta
(University of Kentucky)
Prof.
Susan Gardner
(University of Kentucky)
