a Vertex-Structure Model for New Direct Cp-Violating Effects in bar B0(B^0)->φ K S and in B∓→π∓η‧(η)
Abstract
We consider effective Lagrangian models of CP-violating vertex structure in which a b→uW vertex, proportional to s13e-iδ13 with s13 very small (milliweak interaction) and δ13 large, is dynamically generated. A consequent, enhanced CP-violating vertex for b→sg results in an enhanced CP-violating phase in the ratio of amplitudes for bar B0(B^0)->φ K S. We estimate that this can significantly change the S-parameter from the value expected in the standard model.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- 2006
- DOI:
- 10.1142/S0217732306021700
- arXiv:
- arXiv:hep-ph/0605084
- Bibcode:
- 2006MPLA...21.2729B
- Keywords:
-
- 13.20.He;
- 13.25.Hw;
- 11.30.Er;
- Decays of bottom mesons;
- Charge conjugation parity time reversal and other discrete symmetries;
- High Energy Physics - Phenomenology
- E-Print:
- 12 pages including 3 figures