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Electroweak Penguins, Final State Interaction Phases, and [ital CP] Violation in B [r arrow] K [pi] Decays

Journal Article · · Physical Review Letters
 [1]; ;  [2];  [3];  [4];  [5]
  1. Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403-5203 (United States)
  2. Department of Physics, National Taiwan University, Taipei, Taiwan 10764, Republic of (China)
  3. School of Physics, University of Melbourne, Parkville, Victoria 3052 (Australia)
  4. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  5. Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 90822 (United States)
+ Show Author Affiliations

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:
6470306
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Vol. 82:11; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
B MINUS MESONS
B NEUTRAL MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
CP INVARIANCE
DECAY
ELEMENTARY PARTICLES
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS MINUS
KAONS NEUTRAL
MESONS
PARTICLE DECAY
PIONS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES