Lepton flavor violation in {tau} decays

Journal Article · Tue Aug 01 04:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.035010· OSTI ID:20870912

Chen, C -H ^[1]; Geng, C -Q ^[2]

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1. Department of Physics, National Cheng-Kung University, Tainan, 701 Taiwan (China)
2. Department of Physics, National Tsing-Hua University, Hsin-Chu, 300 Taiwan (China)

We study the lepton flavor violation (LFV) in tau decays in the framework of the supersymmetric seesaw mechanism with nonholomorphic terms for the lepton sector at a large tan{beta}. In particular, we analyze two new decay modes {tau}{yields}lf{sub 0}(980) and {tau}{yields}lK{sup +}K{sup -} arising from the scalar boson exchanges contrast to {tau}{yields}l{eta}{sup (')} from the pseudoscalar ones. We find that the decay branching ratios of the two new modes could be not only as large as the current upper limits of O(10{sup -7}), but also larger than those of {tau}{yields}l{eta}{sup (')}. Experimental searches for the two modes are important for the LFV induced by the scalar-mediated mechanism. In addition, we show that the decay branching ratios of {tau}{yields}l{mu}{sup +}{mu}{sup -} are related to those of {tau}{yields}l{eta} and {tau}{yields}lf{sub 0}(980)

• OSTI ID: 20870912
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSON-EXCHANGE MODELS
BRANCHING RATIO
ETA PRIME-958 MESONS
F0-980 MESONS
FLAVOR MODEL
KAONS MINUS
KAONS PLUS
MUONS MINUS
MUONS PLUS
PARTICLE DECAY
SUPERSYMMETRY
TAU PARTICLES