Speaker
Dr
Sneha Malde
(University of Oxford)
Description
A first measurement of F+, the CP-even content of the decay D--> 4pi using quantum correlated psi(3770) to DDbar decays collected by the CLEO-c experiment is presented. A high value is obtained, which makes the decay mode particularly suitable for both measurements of the CKM angle \gamma and charm CP violation in a model independent way.
This novel approach to studying indirect CP violation in charm decays is based on the time-dependent inclusive analysis of multibody self-conjugate states. These final states can be used to determine the indirect $CP$-violating observable $A_\Gamma$ and the mixing observable $y_{CP}$, provided that $F_+$, is known. This approach can yield significantly improved sensitivity compared with the conventional method that relies on decays to $CP$ eigenstates. Extensions including direct CP violation are also presented.
Summary
This abstract is based on the work in arXiv:1502.04560 and the upcoming measurement of F+ in D-->4pi.
Primary author
Dr
Sneha Malde
(University of Oxford)