Lepton flavor violation decays tau- ---> mu- P(1) P(2) in the topcolor-assisted technicolor model and the littlest Higgs model with T parity

Liu, Wei; Yue, Chong-Xing; Zhang, Jiao

doi:10.1140/epjc/s10052-010-1311-9

Lepton flavor violation decays tau- ---> mu- P(1) P(2) in the topcolor-assisted technicolor model and the littlest Higgs model with T parity

Wei Liu
(
- Liaoning Normal U.
)
,
Chong-Xing Yue
(
- Liaoning Normal U.
)
,
Jiao Zhang
(
- Liaoning Normal U.
)

2010

22 pages

Published in:

Eur.Phys.J.C 68 (2010) 197-207

e-Print:

0910.2514 [hep-ph]

DOI:

10.1140/epjc/s10052-010-1311-9

View in:

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Abstract: (arXiv)

The new particles predicted by the topcolor-assisted technicolor (

TC2

) model and the littlest Higgs model with T-parity (called

LHT

model) can induce the lepton flavor violation (

LFV

) couplings at tree level or one loop level, which might generate large contributions to some

LFV

processes. Taking into account the constraints of the experimental data on the relevant free parameters, we calculate the branching ratios of the

LFV

decay processes

\tau^-\to\mu^- P_1 P_2

with

P_1 P_2

=

\pi^+\pi^-

,

K^+K^-

and

K^0\bar{K^0}

in the context of these two kinds of new physics models. We find that the

TC2

model and the

LHT

model can indeed produce significant contributions to some of these

LFV

decay processes.

Note:

24 pages, 7 figures

tau-: semileptonic decay
lepton number: violation
littlest Higgs model
technicolor
topcolor
tree approximation
tau-: branching ratio
new particle
new physics
T-parity

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