Using B0s decays to determine the CP angles α and γ
Abstract
Dighe, Gronau, and Rosner have shown that, by assuming SU(3) flavor symmetry and first-order SU(3) breaking, it is possible to extract the CP angles α and γ from measurements of the decay rates of B0d(t)-->π+π-, B0d-->π-K+, and B+-->π+K0, along with their charge-conjugate processes. We extend their analysis to include the SU(3)-related decays B0s-->π+K-, B0s(t)-->K+K-, and B0s-->K0K¯0. There are several advantages to this extension: discrete ambiguities are removed, fewer assumptions are necessary, and the method works even if all strong phases vanish. In addition, we show that γ can be obtained cleanly, with no penguin contamination, by using the two decays B0s(t)-->K+K- and B0s-->K0K¯0.
- Publication:
-
Physical Review D
- Pub Date:
- April 1998
- DOI:
- 10.1103/PhysRevD.57.4010
- arXiv:
- arXiv:hep-ph/9708356
- Bibcode:
- 1998PhRvD..57.4010K
- Keywords:
-
- 12.15.Hh;
- 11.30.Er;
- 13.25.Hw;
- 14.40.Nd;
- Determination of Kobayashi-Maskawa matrix elements;
- Charge conjugation parity time reversal and other discrete symmetries;
- Decays of bottom mesons;
- Bottom mesons;
- High Energy Physics - Phenomenology
- E-Print:
- 28 pages, LaTeX