Getting SM and New Physics CP phases from B Decays
Abstract
A method to extract Standard Model(SM) CP phases involving B decays is presented. The method involves a pair of decays where one decay receives a significant
b→d
penguin contribution while the second has a significant
b→s
penguin contribution, but is dominated by a single amplitude. SM CP phase information is obtained using the fact that the
b→s
transition amplitude is related by SU(3) to a piece of the amplitude with the
b→d
transition. If there is significant new physics only in
b→s
transitions and not in
b→d
transitions then this method can be used to measure new physics(NP) phases.