Decay b{yields}s{gamma} in the presence of a constant antisymmetric tensor field

Journal Article · Wed Sep 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.053001· OSTI ID:21432944

Ahuatzin, G ^[1]; Bautista, I ^[2]; Hernandez-Lopez, J A; Toscano, J J ^[3]; Ramirez-Zavaleta, F ^[4]

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1. Instituto de Fisica, Universidad Autonoma de San Luis Potosi, Alvaro Obregon 64, Zona Centro, San Luis Potosi, S.L.P. 78000 (Mexico)
2. IGFAE and Departamento de Fisica de Particulas, Univ. of Santiago de Compostela, 15706, Santiago de Compostela (Spain)
3. Facultad de Ciencias Fisico Matematicas, Benemerita Universidad Autonoma de Puebla, Apartado Postal 1152, Puebla, Puebla (Mexico)
4. Facultad de Ciencias Fisico Matematicas, Universidad Michoacana de San Nicolas de Hidalgo, Avenida Francisco J. Mujica S/N, 58060, Morelia, Michoacan (Mexico)

A constant antisymmetric 2-tensor can arise in general relativity with spontaneous symmetry breaking or in field theories formulated in a noncommutative space-time. In this work, the one-loop contribution of a nonstandard WW{gamma} vertex on the flavor violating quark transition q{sub i}{yields}q{sub j}{gamma} is studied in the context of the electroweak Yang-Mills sector extended with a Lorentz-violating constant 2-tensor. An exact analytical expression for the on-shell case is presented. It is found that the loop amplitude is gauge independent, electromagnetic gauge invariant, and free of ultraviolet divergences. The dipolar contribution to the b{yields}s{gamma} transition together with the experimental data on the B{yields}X{sub s{gamma}} decay is used to derive the constraint {Lambda}{sub LV}>1.96 TeV on the Lorentz-violating scale.

• OSTI ID: 21432944
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevD.82.053001; (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
COMMUTATION RELATIONS
FLAVOR MODEL
GAUGE INVARIANCE
GENERAL RELATIVITY THEORY
LORENTZ INVARIANCE
QUARKS
RADIATIVE DECAY
SPACE-TIME
SYMMETRY BREAKING
TENSOR FIELDS
TEV RANGE 01-10
ULTRAVIOLET DIVERGENCES
WEINBERG-SALAM GAUGE MODEL
YANG-MILLS THEORY
COMPOSITE MODELS
DECAY
ENERGY RANGE
FERMIONS
FIELD THEORIES
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE MODELS
QUANTUM FIELD THEORY
QUARK MODEL
RELATIVITY THEORY
TEV RANGE
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES