Speaker
Mr
Philipp Frings
(Institute for Theoretical Particle Physics (TTP))
Description
The size of the penguin pollution from the u-quark loop is under debate
for many years, and this issue must be settled when future precise data
on the famous mixing-induced CP asymmetries will be analysed to measure
sin(2*beta) or beta_s. We have caluclated the penguin pollution from first principles, using methods of soft-collinear factorisation. (Earlier attempts to do such a calculation for the B-> J/psi K_S branching ratio around 12 years ago had failed. The situation for the penguin pollution, however, is different.)
Primary author
Mr
Philipp Frings
(Institute for Theoretical Particle Physics (TTP))
