Direct CP violation in charmless (charged) B decays
Conference
·
OSTI ID:33380
- Paul Scherrer Institute, Villigen (Switzerland)
Theoretically, the (semi-)inclusive study revealed some subtleties, and both rates and asymmetries should be calculated consistently to O({alpha}{sub s}{sup 2}), for both inclusive and exclusive modes. Exclusive b {yields} su{anti u} type of modes have asymmetries sensitive to soft FSI phases. Pure penguin exclusive b {yields}s modes have very small asymmetries, but are sensitive to new CP phases. Pure penguin exclusive b {yields} d modes suffer from a smaller BR but is compensated for by a larger asymmetry. One may possibly gain by summing over modes, and the pure penguin b {yields} d modes seem to be the most promising. Within the standard model, in general 10{sup 8} or more B`s are needed to uncover CP violation, for either the b {yields} su{anti u} or b {yields} ds{anti s} type of modes.
- OSTI ID:
- 33380
- Report Number(s):
- CONF-9006267--; ISBN 981-02-0931-2
- Country of Publication:
- United States
- Language:
- English
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