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Assamagan, K.; Deandrea, Aldo; Delsart, P. A.

doi:10.1103/physrevd.67.035001

Cited by 72 publications

(81 citation statements)

References 82 publications

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“…[18][19][20][21][22][23]. The lepton flavor violation Higgs boson decays have been studied even before the CMS excess has been reported [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. 4 Similar results have been obtained by [42][43][44].…”

Section: Jhep10(2016)114supporting

confidence: 58%

Michel parameters for τ decays τ → l ν ν ¯ l = e , μ $$ \tau \to l\nu \overline{\nu}\left(l=e,\mu \right) $$ in a general two Higgs doublet model with μ − τ flavor violation

Tobe¹

2016

J. High Energ. Phys.

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Michel parameters for τ decays τ → lνν (l = e, µ) in a general two Higgs doublet model with µ − τ flavor violation Kazuhiro TobeDepartment of Physics, Nagoya University, Nagoya, 464-8602, Japan Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya, 464-8602, Japan E-mail: tobe@eken.phys.nagoya-u.ac.jp Abstract: In a general two Higgs doublet model (2HDM), the anomaly of muon anomalous magnetic moment (muon g-2) can be explained by µ − τ flavor violating Yukawa couplings, motivated by the recent CMS excess in Higgs boson decay h → µτ . We study Michel parameters for τ decays τ → lνν (l = e, µ) in the 2HDM with the lepton flavor violation, and show that they can be sensitive to the flavor structure as well as the Lorentz and chiral structures of the model. We find that the correction to the Michel parameter ξ µ in τ → µνν is correlated to the contribution to the muon g-2, and it can be as large as 10 −4 − 10 −2 in the parameter region where the µ − τ flavor violating Yukawa couplings explain the muon g-2 anomaly. Therefore the precision measurement of the Michel parameter at the level of 10 −4 − 10 −2 would significantly probe the interesting parameter space for the solution to the muon g-2 anomaly.

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Section: Jhep10(2016)114supporting

confidence: 58%

Michel parameters for τ decays τ → l ν ν ¯ l = e , μ $$ \tau \to l\nu \overline{\nu}\left(l=e,\mu \right) $$ in a general two Higgs doublet model with μ − τ flavor violation

Tobe¹

2016

J. High Energ. Phys.

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“…We here neglect terms of O(m (24), (25) and (26). In the following, we concentrate on the decays into a τ -µ pair.…”

Section: Lepton Flavor Violating Higgs Boson Decaysmentioning

confidence: 99%

“…[19], tau associated LFV processes have been discussed comprehensively in the framework of 4-Fermi contact interactions. Phenomenological consequences of the LFV Yukawa couplings associated with tau leptons have also been studied for future observables such as B s decays [13,20] at (super) B factories [21] and Higgs boson decays [15,24,25] at CERN LHC [26], an electron-positron linear collider (LC) [27] and a muon collider [28]. In addition, it has been pointed out that deep inelastic scattering processes µN → τ X [29,30] from intense high energy muons at neutrino factories (or muon colliders) and eN → τ X [30] by using the electron (positron) beam of a LC would be useful to further explore the tau lepton associated LFV Yukawa couplings.…”

Section: Introductionmentioning

confidence: 99%

Lepton flavor violation in Higgs boson decays under the rare tau decay results

2006

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We study lepton flavor violation (LFV) associated with tau leptons in the framework of the two Higgs doublet model, in which LFV couplings are introduced as a deviation from Model II Yukawa interaction. Parameters of the model are constrained from experimental results and also from requirements of theoretical consistencies such as vacuum stability and perturbative unitarity. Current data for rare tau decays provide substantial upper limits on the LFV Yukawa couplings in the large tan β region (tan β 30), which are comparable with predictions in fundamental theories.Here tan β is the ratio of vacuum expectation values of the two Higgs doublets. We show that a search for the LFV decays φ 0 → τ ± µ ∓ (τ ± e ∓ ) of neutral Higgs bosons (φ 0 = h, H and A) at future collider experiments can be useful to further constrain the LFV couplings especially in the relatively small tan β region (tan β 30), where rare tau decay data cannot give any strong limit.

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“…The LFV couplings associated with a tau lepton have been measured at B factories by searches for rare tau decays, such as τ → µγ, τ → 3µ, τ → µππ, τ → µη, etc. At future collider experiments, they are directly tested via the decays of the Higgs bosons (Φ 0 ), Φ 0 → τ ± µ ∓ [2,3]. In this talk, we discuss a µN → τ X reaction at the deep inelastic scattering (DIS) region with high-intensity and high-energy muon beams as an alternative approach of searching for the LFV couplings associated with a tau lepton.…”

Section: Introductionmentioning

confidence: 99%

Search for lepton flavor violation via the intense high-energy muon beam

Kanemura

Kuno

Kuze

et al. 2005

Nuclear Physics B - Proceedings Supplements

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A deep inerastic scattering process µN → τ X is discussed to study lepton flavor violation between muons and tau leptons. In supersymmetric models, the Higgs boson mediated diagrams could be important for this reaction. We find that at a muon energy (Eµ) higher than 50 GeV, the predicted cross section significantly increases due to the contribution from sea b-quarks. The number of produced tau leptons can be O(10

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Search for the lepton flavor violating decayA0/H0→τ±

Cited by 72 publications

References 82 publications

Michel parameters for τ decays τ → l ν ν ¯ l = e , μ $$ \tau \to l\nu \overline{\nu}\left(l=e,\mu \right) $$ in a general two Higgs doublet model with μ − τ flavor violation

Michel parameters for τ decays τ → l ν ν ¯ l = e , μ $$ \tau \to l\nu \overline{\nu}\left(l=e,\mu \right) $$ in a general two Higgs doublet model with μ − τ flavor violation

Lepton flavor violation in Higgs boson decays under the rare tau decay results

Search for lepton flavor violation via the intense high-energy muon beam

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