Revisiting charmless hadronic B{sub u,d} decays in QCD factorization

Journal Article · Tue Dec 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.114008· OSTI ID:21313463

Cheng, H -Y ^[1]; Chua, C -K ^[2]

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1. Institute of Physics, Academia Sinica, Taipei, Taiwan 115 (China)
2. Department of Physics, Chung Yuan Christian University, Chung-Li, Taiwan 320 (China)

Within the framework of QCD factorization, we consider two different types of power correction effects in order to resolve the CP puzzles and rate deficit problems with penguin-dominated two-body decays of B mesons and color-suppressed tree-dominated {pi}{sup 0}{pi}{sup 0} and {rho}{sup 0}{pi}{sup 0} modes: penguin annihilation and soft corrections to the color-suppressed tree amplitude. We emphasize that the electroweak penguin solution to the B{yields}K{pi} CP puzzle via new physics is irrelevant for solving the CP and rate puzzles related to tree-dominated decays. While some channels, e.g. K{sup -}{pi}{sup +}, K{sup -}{rho}{sup 0}, {pi}{sup +}{pi}{sup -}, {rho}{sup {+-}}{pi}{sup {+-}} need penguin annihilation to induce the correct magnitudes and signs for their CP violation, some other decays such as B{sup -}{yields}K{sup -}{pi}{sup 0}, {pi}{sup -}{eta}, K{sup -}{eta} and B{sup 0}{yields}K*{sup 0}{eta}, {pi}{sup 0}{pi}{sup 0} require the presence of both power corrections to account for the measured CP asymmetries. In general, QCD factorization predictions for the branching fractions and direct CP asymmetries of B{yields}PP, VP, VV decays are in good agreement with experiment. The predictions of perturbative QCD and soft-collinear effective theory are included for comparison.

• OSTI ID: 21313463
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANNIHILATION
ASYMMETRY
B MESONS
BRANCHING RATIO
COLOR MODEL
COMPARATIVE EVALUATIONS
CORRECTIONS
CP INVARIANCE
ETA MESONS
FACTORIZATION
FORECASTING
KAONS MINUS
MATHEMATICAL SOLUTIONS
PARTICLE DECAY
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
QUANTUM CHROMODYNAMICS
TWO-BODY PROBLEM