Study of scalar meson f{sub 0}(980) and K{sub 0}{sup *}(1430) from B{yields}f{sub 0}(980){rho}({omega},{phi}) and B{yields}K{sub 0}{sup *}(1430){rho}({omega}) decays

Journal Article · Sun Aug 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.034036· OSTI ID:21432874

Zhang, Zhi-Qing ^[1]

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1. Department of Physics, Henan University of Technology, Zhengzhou, Henan 450052 (China)

In the two-quark model supposition for f{sub 0}(980) and K{sub 0}{sup *}(1430), the branching ratios and the direct CP-violating asymmetries for decays B{sup 0}{yields}f{sub 0}(980){rho}{sup 0}({omega}, {phi}), K{sub 0}{sup *0}(1430){rho}{sup 0}({omega}), K{sub 0}{sup *-}(1430){rho}{sup +} and B{sup -}{yields}f{sub 0}(980){rho}{sup -}, K{sub 0}{sup *0}(1430){rho}{sup -}, K{sub 0}{sup *-}(1430){rho}{sup 0}({omega}) are studied by employing the perturbative QCD factorization approach. we find the following results: (a) if the scalar meson f{sub 0}(980) is viewed as a mixture of ss and (uu+dd)/{radical}(2), the branching ratios of the b{yields}d transition processes B{sup 0}{yields}f{sub 0}(980){rho}{sup 0}({omega},{phi}) and B{sup -}{yields}f{sub 0}(980){rho}{sup -} are smaller than the currently experimental upper limits, and the predictions for the decays B{sup 0}{yields}f{sub 0}(980){omega}, B{sup -}{yields}f{sub 0}(980){rho}{sup -} are not far away from their limits; (b) in the b{yields}s transition processes B{yields}K{sub 0}{sup *}(1430){rho}({omega}), the branching ratio of B{sup 0}{yields}K{sub 0}{sup *0}(1430){rho}{sup 0} is the smallest one, at the order of 10{sup -7} by treating K{sub 0}{sup *}(1430) as the lowest lying state, about 4.8x10{sup -6} by considering K{sub 0}{sup *}(1430) as the first excited state; (c) the direct CP-violating asymmetries of decays B{yields}f{sub 0}(980){rho}({omega}) have a strong dependence on the mixing angle {theta}: they are large in the range of 25 degree sign <{theta}<40 degree sign , and small in the range of 140 degree sign <{theta}<165 degree sign , while the direct CP-violating asymmetry amplitudes of decays B{yields}K{sub 0}{sup *}(1430){rho}({omega}) are not large in the two kinds of state supposition for K{sub 0}{sup *}(1430) and most of them are less than 20%.

• OSTI ID: 21432874
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevD.82.034036; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ASYMMETRY
B NEUTRAL MESONS
BRANCHING RATIO
CP INVARIANCE
EXCITED STATES
F0-980 MESONS
FACTORIZATION
FORECASTING
K*0-1430 MESONS
MIXTURES
OMEGA BARYONS
PARTICLE DECAY
QUANTUM CHROMODYNAMICS
QUARK MODEL
WEINBERG ANGLE
B MESONS
BARYONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
COMPOSITE MODELS
DECAY
DIMENSIONLESS NUMBERS
DISPERSIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
FERMIONS
FIELD THEORIES
HADRONS
HYPERONS
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
SCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES