Penguin-dominated B{yields}PV decays in NLO perturbative QCD

Journal Article · Wed Nov 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.094020· OSTI ID:20873145

Hsiangnan, Li ^[1]; Mishima, Satoshi ^[2]

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1. Institute of Physics, Academia Sinica, Taipei, Taiwan 115, Republic of China and Department of Physics, National Cheng-Kung University, Tainan, Taiwan 701 (China)
2. School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

We study the penguin-dominated B{yields}PV decays, with P (V) representing a pseudoscalar (vector) meson, in the next-to-leading-order (NLO) perturbative QCD (PQCD) formalism, concentrating on the B{yields}K{phi}, {pi}K*, {rho}K, and {omega}K modes. It is found that the NLO corrections dramatically enhance the B{yields}{rho}K, {omega}K branching ratios, which were estimated to be small under the naive factorization assumption. The patterns of the direct CP asymmetries A{sub CP}(B{sup 0}{yields}{rho}{sup {+-}}K{sup {+-}}){approx_equal}A{sub CP}(B{sup {+-}}{yields}{rho}{sup 0}K{sup {+-}}) and A{sub CP}(B{sup 0}{yields}{pi}{sup {+-}}K*{sup {+-}})>A{sub CP}(B{sup {+-}}{yields}{pi}{sup 0}K*{sup {+-}}) are predicted, differing from A{sub CP}(B{sup 0}{yields}{pi}{sup {+-}}K{sup {+-}})>>A{sub CP}(B{sup {+-}}{yields}{pi}{sup 0}K{sup {+-}}). The above patterns, if confirmed by data, will support the source of strong phases from the scalar penguin annihilation in PQCD. The results for the mixing-induced CP asymmetries S{sub f} are consistent with those obtained in the literature, except that our S{sub {rho}{sup 0}}{sub K{sub S}} is as low as 0.5.

• OSTI ID: 20873145
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ASYMMETRY
B MINUS MESONS
B NEUTRAL MESONS
B PLUS MESONS
BRANCHING RATIO
CORRECTIONS
CP INVARIANCE
FACTORIZATION
HADRONIC PARTICLE DECAY
K*-892 MESONS
KAONS MINUS
KAONS PLUS
MIXING
OMEGA-782 MESONS
PERTURBATION THEORY
PHI-1020 MESONS
PHI-1680 MESONS
QUANTUM CHROMODYNAMICS
RHO-770 MESONS
SCALARS