Speaker
Markus Bobrowski
(University of Regensburg)
Description
We investigate the mixing of neutral charmed mesons within the Standard Model (SM), using the framework of Heavy Quark Expansion (HQE). In a recent study, we have argued that a CP phase of the order of 1 per mille to 1 per cent could be present in charm mixing in the SM. Our arguments rely on the enhancement of higher-dimensional terms in the HQE due to a lifting of the severe GIM suppression inherent to the dimension-six result. We propose a factorisation approach to quantify the amount of SU(3) symmetry breaking in dimension 10 and 12 on more solid grounds and report on first numerical results of this study.
Authors
Prof.
Alexander Lenz
(TU Dortmund)
Markus Bobrowski
(University of Regensburg)
