Branching ratios, forward-backward asymmetries, and angular distributions of B{yields}K{sub 2}*l{sup +}l{sup -} in the standard model and two new physics scenarios

Journal Article · Tue Feb 01 04:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.034034· OSTI ID:21504894

Runhui, Li ^[1]; Caidian, Lue ^[1]; Wei, Wang ^[2]

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1. Institute of High Energy Physics, P.O. Box 918(4), Beijing 100049 (China)
2. Deutsches Elektronen-Synchrotron DESY, Hamburg 22607 (Germany)

We analyze the B{yields}K{sub 2}*({yields}K{pi})l{sup +}l{sup -} (with l=e, {mu}, {tau}) decay in the standard model and two new physics scenarios: the vectorlike quark model and family nonuniversal Z{sup '} models. We derive the differential angular distributions using the recently calculated form factors in the perturbative QCD approach. Branching ratios, polarizations, forward-backward asymmetries, and transversity amplitudes are predicted, from which we find a promising prospective to observe this channel in future experiments. We update the constraints on effective Wilson coefficients and/or free parameters in these two new physics scenarios by making use of the B{yields}K*l{sup +}l{sup -} and b{yields}sl{sup +}l{sup -} experimental data. Their impact on B{yields}K{sub 2}*l{sup +}l{sup -} is subsequently explored and, in particular, the zero-crossing point for the forward-backward asymmetry in these new physics scenarios can sizably deviate from the standard model. In addition we also generalize the analysis to a similar mode, B{sub s}{yields}f{sub 2}{sup '}(1525)({yields}K{sup +}K{sup -})l{sup +}l{sup -}.

• OSTI ID: 21504894
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR DISTRIBUTION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ASYMMETRY
B MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
DECAY
DIMENSIONLESS NUMBERS
DISTRIBUTION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FORM FACTORS
GRAND UNIFIED THEORY
HADRONS
HEAVY LEPTONS
KAONS
KAONS MINUS
KAONS PLUS
LEPTONS
MATHEMATICAL MODELS
MATTER
MESONS
MUONS
MUONS MINUS
MUONS PLUS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
POLARIZATION
POSITRONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
STANDARD MODEL
STRANGE MESONS
STRANGE PARTICLES
TAU PARTICLES
UNIFIED GAUGE MODELS