Electroweak Penguins, Final State Interaction Phases, and {ital CP} Violation in B {r_arrow} K {pi} Decays
- Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403-5203 (United States)
- Department of Physics, National Taiwan University, Taipei, Taiwan 10764, Republic of (China)
- School of Physics, University of Melbourne, Parkville, Victoria 3052 (Australia)
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 90822 (United States)
The recently observed B{sup {minus}} {r_arrow} K{sup {minus}} {pi} {sup 0}, {bar K}{sup 0} {pi} {sup {minus}} and {bar B} {sup 0} {r_arrow} K{sup {minus}} {pi} {sup +} decay modes appear to have nearly equal branching ratios. This suggests that tree and electroweak penguins play an important role, and inclusion of the latter improves agreement between factorization calculation and experimental data. The value of {gamma} in the range of 90{degree} {endash} 130{degree} and 220{degree} {endash} 260{degree} is favored, while the {bar B} {sup 0} {r_arrow} {bar K} {sup 0} {pi} {sup 0} rate is suppressed. Direct CP violation for B{r_arrow} K{pi} modes can be large if final state interaction phases are large. {copyright} {ital 1999} {ital The American Physical Society}
- DOE Contract Number:
- FG02-85ER45224
- OSTI ID:
- 365843
- Journal Information:
- Physical Review Letters, Vol. 82, Issue 11; Other Information: PBD: Mar 1999
- Country of Publication:
- United States
- Language:
- English
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