| DATE: |
2005-12-09 11:00 - |
| PLACE: |
Hon-kan Rm. 220 |
| TITLE: |
Interplay between weak and strong phases from Charmless B decays |
| CONTACT: |
Tango |
| SPEAKER: |
Dr. Yu-Feng Zhou (KEK) |
| LANGUAGE: |
English |
| ABSTRACT: |
Hadronic charmless B decays B->pipi, piK and KK provide usĦĦimportant
information on both weak and strong phases, and may shed light on
possible new physics beyond the standard model (SM). These decay modes
are related through approxiamte flavor SU(3) symmetry, which allowes
model indepent determinations of weak phase gamma and hadronic
amplitudes. The current data have exhibit some puzzling patterns. Our
recent fits based on SU(3) symmetry implie possible enhancement in the
electroweak penguin sector, large strong phase and large nonfactorizable
contributions. The weak phase gamma is determinded in agreement with the
SM and insensitive to SU(3) breaking scheme.
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