Searching for lepton flavor violating decays $$\tau \rightarrow Pl$$ in the minimal R-symmetric supersymmetric standard model
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Published:2020-12
Issue:12
Volume:80
Page:
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ISSN:1434-6044
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Container-title:The European Physical Journal C
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language:en
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Short-container-title:Eur. Phys. J. C
Author:
Sun Ke-Sheng,Guo Tao,Li Wei,Yang Xiu-Yi,Zhao Shu-Min
Abstract
AbstractWe analyze the lepton flavor violating decays $$\tau \rightarrow Pl$$
τ
→
P
l
($$P=\pi ,\eta ,\eta ';\;l=e,\mu $$
P
=
π
,
η
,
η
′
;
l
=
e
,
μ
) in the scenario of the minimal R-symmetric supersymmetric standard model. The prediction on the branching ratios BR$$(\tau \rightarrow P e)$$
(
τ
→
P
e
)
and BR$$(\tau \rightarrow P \mu )$$
(
τ
→
P
μ
)
is affected by the mass insertion parameters $$\delta ^{13}$$
δ
13
and $$\delta ^{23}$$
δ
23
, respectively. These parameters are constrained by the experimental bounds on the branching ratios BR($$\tau \rightarrow e (\mu ) \gamma $$
τ
→
e
(
μ
)
γ
) and BR($$\tau \rightarrow 3e(\mu )$$
τ
→
3
e
(
μ
)
). The result shows Z penguin dominates the prediction on BR($$\tau \rightarrow Pl$$
τ
→
P
l
) in a large region of the parameter space. The branching ratios for BR($$\tau \rightarrow Pl$$
τ
→
P
l
) are predicted to be, at least, five orders of magnitude smaller than present experimental bounds and three orders of magnitude smaller than future experimental sensitivities.
Funder
National Natural Science Foundation of China
Foundation of Department of Education of Liaoning province
Scientific Research Foundation of the Higher Education Institutions of Hebei Province
Natural Science Foundation of Hebei Province
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
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