Higgs to
 μ
 ∓
 τ
 ±
 decay in supersymmetry without R-parity

Arhrib, Abdesslam; Cheng, Yifan; Kong, Otto C. W.

doi:10.1209/0295-5075/101/31003

Cited by 39 publications

(23 citation statements)

References 63 publications

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“…On the theoretical side, the subject of LFVHD has been studied for a long time in the literature within various models beyond the SM (for recent works see, for instance, ), but the most frequently explored ones are the supersymmetric (SUSY) models because the needed feature of flavor mixing among particles of different generations to produce these exotic decays is easily incorporated and well justified in the SUSY particles sector [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. More specifically, it is the flavor mixing among the three generations of the charged sleptons and/or sneutrinos, typically present in SUSY models, what produces via their contributions at the one-loop level, these interesting Higgs decay channels with Lepton Flavor Violation (LFV).…”

Section: Jhep03(2016)055mentioning

confidence: 99%

Analysis of the h, H, A → τμ decays induced from SUSY loops within the Mass Insertion Approximation

Arganda

Herrero

Morales

et al. 2016

J. High Energ. Phys.

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In this paper we study the lepton favor violating decay channels of the neutral Higgs bosons of the Minimal Supersymmetric Standard Model into a lepton and an antilepton of different flavor. We work in the context of the most general flavor mixing scenario in the slepton sector, in contrast to the minimal flavor violation assumption more frequently used. Our analytic computation is a one-loop diagrammatic one, but in contrast to the full one-loop computation which is usually referred to the physical slepton mass basis, we use here instead the Mass Insertion Approximation (MIA) which uses the electroweak interaction slepton basis and treats perturbatively the mass insertions changing slepton flavor. By performing an expansion in powers of the external momenta in the relevant form factors, we will be able to separate explicitly in the analytic results the leading non-decoupling (constant at asymptotically large sparticle masses) and the next to leading decoupling contributions (decreasing with the sparticle masses). Our final aim is to provide a set of simple analytic formulas for the form factors and the associated effective vertices, that we think may be very useful for future phenomenological studies of the lepton flavor violating Higgs boson decays, and for their comparison with data. The accuracy of the numerical results obtained with the MIA are also analyzed and discussed here in comparison with the full one-loop results. Our most optimistic numerical estimates for the three neutral Higgs boson decays channels into τ and µ leptons, searching for their maximum rates that are allowed by present constraints from τ → µγ data and beyond Standard Model Higgs boson searches at the LHC, are also included.

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Section: Jhep03(2016)055mentioning

confidence: 99%

Analysis of the h, H, A → τμ decays induced from SUSY loops within the Mass Insertion Approximation

Arganda

Herrero

Morales

et al. 2016

J. High Energ. Phys.

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“…The decay μ → eγ has been extensively studied in the 2HDM [3,[15][16][17][18][19][20][21][22][23][24][25][26][27], particularily in connection [29][30][31][32][33][34][35][36][37] with the recent LHC [28,38] excess in h → τ ± μ ∓ . Chang, Hou and Keung [5] (CHK) calculate the contributions to μ → eγ of neutral Higgs bosons with flavour-changing couplings.…”

Section: μ → Eγ In the 2hdmmentioning

confidence: 99%

$$\mu \rightarrow e \gamma $$ μ → e γ in the 2HDM: an exercise in EFT

Davidson

2016

Eur. Phys. J. C

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The 2 Higgs Doublet Model of type III has renormalisable Lepton Flavour-Violating couplings, and its oneand two-loop ("Barr-Zee") contributions to μ → eγ are known. In the decoupling limit, where the mass scale M of the second doublet is much greater than the electroweak scale, the model can be parametrised with an Effective Field Theory (EFT) containing dimension-six operators. The 1/M 2 terms of the exact calculation are reproduced in the EFT, provided that the four-fermion operator basis below the weak scale is enlarged with respect to the SU(2)-invariant BuchmullerWyler list. It is found that the dominant two-loop "Barr-Zee" contributions arise mostly in two-loop matching and running, and that dimension-eight operators might be numerically relevant.

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“…For an arbitrary scalar mixing matrix O, the CP asymmetry in h 1 → µτ decays is given by 17) with the loop function…”

Section: Jhep10(2014)156mentioning

confidence: 99%

Flavor and CP violation in Higgs decays

Kopp

Nardecchia

2014

J. High Energ. Phys.

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Flavor violating interactions of the Higgs boson are a generic feature of models with extended electroweak symmetry breaking sectors. Here, we investigate CP violation in these interactions, which can arise from interference of tree-level and 1-loop diagrams. We compute the CP asymmetry in flavor violating Higgs decays in an effective field theory with only one Higgs boson and in a general Type-III Two Higgs Doublet Model (2HDM). We find that large (∼ O(10%)) asymmetries are possible in the 2HDM if one of the extra Higgs bosons has a mass similar to the Standard Model Higgs. For the poorly constrained decay modes h → τ µ and h → τ e, this implies that large lepton charge asymmetries could be detectable at the LHC. We quantify this by comparing the sensitivity of the LHC to existing direct and indirect constraints. Interestingly, detection prospects are best if Higgs mixing is relatively small -a situation that is preferred by the current data. Nevertheless, CP violation in h → τ µ or h → τ e will only be observable if nonzero rates for these decay modes are measured very soon.

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Higgs to μ ^∓ τ ^± decay in supersymmetry without R-parity

Cited by 39 publications

References 63 publications

Analysis of the h, H, A → τμ decays induced from SUSY loops within the Mass Insertion Approximation

Analysis of the h, H, A → τμ decays induced from SUSY loops within the Mass Insertion Approximation

$$\mu \rightarrow e \gamma $$ μ → e γ in the 2HDM: an exercise in EFT

Flavor and CP violation in Higgs decays

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Higgs to μ ∓ τ ± decay in supersymmetry without R-parity

Cited by 39 publications

References 63 publications

Analysis of the h, H, A → τμ decays induced from SUSY loops within the Mass Insertion Approximation

Analysis of the h, H, A → τμ decays induced from SUSY loops within the Mass Insertion Approximation

$$\mu \rightarrow e \gamma $$ μ → e γ in the 2HDM: an exercise in EFT

Flavor and CP violation in Higgs decays

Contact Info

Product

Resources

About

Higgs to μ ^∓ τ ^± decay in supersymmetry without R-parity