Naturally large radiative lepton flavor violating Higgs decay mediated by lepton-flavored dark matter

Baek, Seungwon; Kang, Zhaofeng

doi:10.1007/jhep03(2016)106

Cited by 41 publications

(18 citation statements)

References 80 publications

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“…We emphasize that our work is different from previous studies that connected lepton flavor violation [40][41][42][43][44][45][46][47][48][49][50][51] for the following reasons:…”

Section: Introductioncontrasting

confidence: 61%

Lepton flavor violation induced by dark matter

et al. 2018

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Guided by gauge principles we discuss a predictive and falsifiable UV complete model where the Dirac fermion that accounts for the cold dark matter abundance in our Universe induces the lepton flavor violation (LFV) decays μ → eγ and μ → eee as well as μ − e conversion. We explore the interplay between direct dark matter detection, relic density, collider probes and lepton flavor violation to conclusively show that one may have a viable dark matter candidate yielding flavor violation signatures that can be probed in the upcoming experiments. In fact, keeping the dark matter mass at the TeV scale, a sizable LFV signal is possible, while reproducing the correct dark matter relic density and meeting limits from direct-detection experiments.

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“…We emphasize that our work is different from previous studies that connected lepton flavor violation [40][41][42][43][44][45][46][47][48][49][50][51] for the following reasons:…”

Section: Introductioncontrasting

confidence: 61%

Lepton flavor violation induced by dark matter

et al. 2018

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“…If S ± (S d,r and S d,i ) have the same mass, their contribution from the interactions (5) and (6) to the DD scattering amplitude exactly cancels due to the relative minus sign in the interaction term. 7 For equal masses the effective coupling λ HS can be generalized from the singlet case to an arbitrary SU(2) L representation of dimension d F by replacing…”

Section: Dirac Dark Mattermentioning

confidence: 99%

“…In Refs. [4][5][6][7] the authors studied DD limits from photon interactions in the context of flavored DM and in Ref. [8] in the context of a radiative neutrino mass model (the scotogenic model [9]) with inelastic Majorana DM.…”

Section: Introductionmentioning

confidence: 99%

Dark matter direct detection of a fermionic singlet at one loop

2018

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The strong direct detection limits could be pointing to dark matter -nucleus scattering at loop level. We study in detail the prototype example of an electroweak singlet (Dirac or Majorana) dark matter fermion coupled to an extended dark sector, which is composed of a new fermion and a new scalar. Given the strong limits on colored particles from direct and indirect searches we assume that the fields of the new dark sector are color singlets. We outline the possible simplified models, including the well-motivated cases in which the extra scalar or fermion is a Standard Model particle, as well as the possible connection to neutrino masses. We compute the contributions to direct detection from the photon, the Z and the Higgs penguins for arbitrary quantum numbers of the dark sector. Furthermore, we derive compact expressions in certain limits, i.e., when all new particles are heavier than the dark matter mass and when the fermion running in the loop is light, like a Standard Model lepton. We study in detail the predicted direct detection rate and how current and future direct detection limits constrain the model parameters. In case dark matter couples directly to Standard Model leptons we find an interesting interplay between lepton flavor violation, direct detection and the observed relic abundance.

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“…Many extensions of the SM do not preserve lepton-flavor number, and the corresponding parameters have been tightly restricted by the negative outcomes of the various searches conducted so far in the decays of kaons, B mesons, and charged leptons, among others [1][2][3][4][5][6][7][8][9][10][11]. The most common examples of NP exhibiting LFV include leptoquarks [12][13][14][15][16][17][18][19][20][21][22], heavy neutrinos [23][24][25][26][27][28][29][30][31][32], gauged U(1) extensions of the SM with their associated Z gauge bosons [33][34][35][36][37][38][39][40][41], and multi-Higgs models [42][43][44][45][46][47]…”

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confidence: 99%

Charged-lepton-flavor violation in |ΔS| = 1 hyperon decays

He¹,

Tandean²,

Valencia³

2019

J. High Energ. Phys.

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Studies of lepton-flavor violation in strangeness-changing (|∆S| = 1) transitions have a long tradition in the kaon sector where they provide some of the strongest limits on physics beyond the standard model. Recent hints of violation of lepton-flavor universality in B-meson decays have revived interest in lepton-flavor violation as the two phenomena appear simultaneously in many extensions of the standard model. At the same time, the LHCb experiment has produced new results for the hyperon process Σ + → pµ + µ − and may be in a position to study other rare hyperon decay modes. With this in mind, we investigate |∆S| = 1 hyperon decays into different-flavor lepton pairs e ± µ ∓ in a model-independent manner and contrast the coverage of parameter space that can be achieved with what is known from kaon modes. We include a comparison with selected two-body leptonic decays of charged mesons, with K → πνν modes, with µ → e conversion, and with lepton-flavor violating decays of other neutral mesons, all of which constrain the same parameter space in a complementary way.

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Naturally large radiative lepton flavor violating Higgs decay mediated by lepton-flavored dark matter

Cited by 41 publications

References 80 publications

Lepton flavor violation induced by dark matter

Lepton flavor violation induced by dark matter

Dark matter direct detection of a fermionic singlet at one loop

Charged-lepton-flavor violation in |ΔS| = 1 hyperon decays

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