Lepton flavor violating semileptonic {tau} decays {tau}{yields}lP(V) in a topcolor scenario

Journal Article · Fri Dec 01 04:00:00 UTC 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.115018· OSTI ID:20868138

Chongxing, Yue; Lihong, Wang; Wei, Ma ^[1]

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1. Department of Physics, Liaoning Normal University, Dalian 116029 (China)

The contributions of the neutral top-pion {pi}{sub t}{sup 0} and the nonuniversal gauge boson Z{sup '} predicted by the topcolor scenario to the lepton flavor violating semileptonic {tau} decays {tau}{yields}lP(V) (P={pi}{sup 0}, {eta}, {eta}{sup '} and V={rho}{sup 0}, {phi}) are discussed. We find that the contributions of Z{sup '} to these decay processes are generally larger than those from {pi}{sub t}{sup 0}. {pi}{sub t}{sup 0} can only make the value of the branching ratio Br({tau}{yields}lP) in the range of 1x10{sup -11}-1x10{sup -16}, which is far below the sensitivity of foreseeable experiments. With reasonable values of the free parameters, the nonuniversal gauge boson Z{sup '} can make the value of the branching ratio Br({tau}{sup -}{yields}{mu}{sup -}{phi}) reach 1x10{sup -7}, which might approach the observable threshold of near-future experiments.

• OSTI ID: 20868138
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
FLAVOR MODEL
MUONS MINUS
PARTICLE DECAY
PHI-1020 MESONS
PHI-1680 MESONS
PIONS NEUTRAL
RHO-770 MESONS
SENSITIVITY
TAU PARTICLES