Abstract
Charge parity asymmetry in charmless B meson decays is a key issue to be understood. Many theoretical calculations have been performed using short distance factorization approaches which, in general, do not take into account the invariance constraint. For each channel with violation there is an equal amount of asymmetry in another channel or other channels, with an opposite sign. This happens if these channels are coupled through final state interactions. In the specific process , involving one pseudoscalar and one vector particle in the final state, we argue that the asymmetry, inherent from a short distance mechanism, could be suppressed due to the constraint. In this case, we propose a sensitive and practical experimental method to identify even a small asymmetry, which provides the values for without the need for an amplitude analysis. This method, if applied directly to data, will enable one to extract the asymmetry information in a model independent way and check to which extent the suggested suppression due to the constraint is verified.
- Received 15 July 2016
DOI:https://doi.org/10.1103/PhysRevD.94.054028
© 2016 American Physical Society