$\tau$- and $\mu$-physics in a general two Higgs doublet model with $\mu-\tau$ flavor violation - INSPIRE

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$\tau$ - and $\mu$ -physics in a general two Higgs doublet model with $\mu-\tau$ flavor violation

Yuji Omura
(
- KMI, Nagoya
)
,
Eibun Senaha
(
- Taiwan, Natl. Central U.
)
,
Kazuhiro Tobe
(
- Nagoya U. and
- KMI, Nagoya
)

Nov 28, 2015

15 pages

Published in:

Phys.Rev.D 94 (2016) 5, 055019

Published: Sep 15, 2016

e-Print:

1511.08880 [hep-ph]

DOI:

10.1103/PhysRevD.94.055019

View in:

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Abstract: (APS)

Motivated by the recent CMS excess in a flavor violating Higgs decay h→μτ as well as the anomaly of muon anomalous magnetic moment (muon g-2), we consider a scenario where both the excess in h→μτ and the anomaly of muon g-2 are explained by the μ-τ flavor violation in a general two Higgs doublet model. We study various processes involving μ and τ, and then discuss the typical predictions and constraints in this scenario. Especially, we find that the prediction of τ→μγ can be within the reach of the Belle II experiment. We also show that the lepton nonuniversality between τ→μνν¯ and τ→eνν¯ can be sizable, and hence the analysis of the current Belle data and the future experimental improvement would have an impact on this model. Besides, processes such as τ→μl+l- (l=e,μ), τ→μη, μ→eγ, μ→3e, and the muon electric dipole moment can be accessible, depending on the unknown Yukawa couplings. On the other hand, the processes like τ→eγ and τ→el+l- (l=e,μ) could not be sizable to observe because of the current strong constraints on the e-μ and e-τ flavor violations. Then we also conclude that contrary to the h→μτ decay mode, the lepton flavor violating Higgs boson decay modes h→eμ and h→eτ are strongly suppressed, and hence it will be difficult to observe these modes at the LHC experiment.

Note:

35 pages, 17 figures, 1 table

flavor: violation
muon: magnetic moment
Higgs particle: doublet
lepton: flavor: violation
muon: electric moment
Higgs particle: decay modes
coupling: Yukawa
electron
anomaly
BELLE

References(60)

Figures(17)

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