Measurements of sin2 alpha phi_2 from B to pi pi, rho pi and rho rho Modes.
- SLAC
B meson decays involving b {yields} u transitions are sensitive to the unitarity triangle angle {alpha} (or {phi}{sub 2}). The BABAR and Belle experiments have studied B-meson decays to {pi}{pi}, {rho}{pi} and {rho}{rho} final states. It is possible to combine these measurements to constrain {alpha} with a precision of {Omicron}(10{sup o}) and a central value of approximately 100 degrees. These results are consistent with Standard Model expectations.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 839802
- Report Number(s):
- SLAC-PUB-10874
- Country of Publication:
- United States
- Language:
- English
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