Radiative seesaw models linking to dark matter candidates inspired by the DAMPE excess

Nomura, Takaaki; Okada, Hiroshi

doi:10.1016/j.dark.2018.07.003

Cited by 14 publications

(4 citation statements)

References 42 publications

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“…Recently, the DAMPE collaboration reported its first result of the total CR e ± spectrum in the energy range from 25 GeV to 4.6 TeV [17]. Many studies have been performed to explain the tentative features in this spectrum [18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45].…”

Section: Introductionmentioning

confidence: 99%

Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios

Wang

Lin

et al. 2018

Sci. China Phys. Mech. Astron.

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Many studies have shown that either the nearby astrophysical source or dark matter (DM) annihilation/decay is required to explain the origin of high energy cosmic ray (CR) e ± , which are measured by many experiments, such as PAMELA and AMS-02. Recently, the Dark Matter Particle Explorer (DAMPE) collaboration has reported its first result of the total CR e ± spectrum from 25 GeV to 4.6 TeV with high precision. In this work, we study the DM annihilation and pulsar interpretations of the DAMPE high energy e ± spectrum. In the DM scenario, the leptonic annihilation channels to τ + τ − , 4µ, 4τ , and mixed charged lepton final states can well fit the DAMPE result, while the µ + µ − channel has been excluded. In addition, we find that the mixed charged leptons channel would lead to a sharp drop at ∼ TeV. However, these DM explanations are almost excluded by the observations of gamma-ray and CMB, unless some complicated DM models are introduced. In the pulsar scenario, we analyze 21 nearby known pulsars and assume that one of them is the primary source of high energy CR e ± . Considering the constraint from the Fermi-LAT observation of the e ± anisotropy, we find that two pulsars are possible to explain the DAMPE data. Our results show that it is difficult to distinguish between the DM annihilation and single pulsar explanations of high energy e ± with the current DAMPE result.

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Section: Introductionmentioning

confidence: 99%

Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios

Wang

Lin

et al. 2018

Sci. China Phys. Mech. Astron.

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“…Texture B 2 is realised with U (1) Le+Lµ−Lτ gauge symmetry in Ref. [39]. If the quark flavor is also flavor dependent, e.g., U (1) xB 3 −xLe−Lµ+Lτ , then one can further interpret the R K anomaly with texture A 1 [40].…”

Section: Introductionmentioning

confidence: 99%

Predictive scotogenic model with flavor dependent symmetry

Han

Wang

2019

Eur. Phys. J. C

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In this paper, we propose a viable approach to realise two texture-zeros in the scotogenic model with flavor dependent U (1) B−2Lα−L β gauge symmetry. These models are extended by two righthanded singlets N Ri and two inert scalar doublets η i , which are odd under the dark Z 2 symmetry.Among all the six constructed textures, texture A 1 and A 2 are the only two allowed by current experimental limits. Then choosing texture A 1 derived from U (1) B−2Le−Lτ , we perform a detail analysis on the corresponding phenomenology such as predictions of neutrino mixing parameters, lepton flavor violation, dark matter and collider signatures. One distinct nature of such model is that the structure of Yukawa couplingLηN R is fixed by neutrino oscillation data, and can be further tested by measuring the branching ratios of charged scalars η ± 1,2 .

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“…In such a scenario rich phenomenology would be induced from scalar bosons from Higgs sector as well as Z boson from extra U (1) symmetry. In fact many works have been carried out in a scheme of THDM with extra U (1) symmetry motivated by several issues such as absence of FCNC [1], neutrino mass [2][3][4][5][6][7][8][9][10][11], flavor physics [12][13][14][15][16], dark matter(DM) [17][18][19][20][21] and collider physics [22][23][24].…”

Section: Introductionsmentioning

confidence: 99%

Lepton specific two-Higgs-doublet model based on a U(1)X gauge symmetry with dark matter

Nomura¹,

Sanyal

2019

Phys. Rev. D

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We discuss a two Higgs doublet model with extra U (1) X gauge symmetry where lepton specific (type-X) structure for Yukawa interactions is realized by charge assignment of fields under the U (1) X . Extra charged leptons are introduced to cancel gauge anomaly associated with extra gauge symmetry. In addition, we introduce scalar fields as dark matter candidates to which we assign Z 2 odd parity for guaranteeing stability of them. We then analyze phenomenology of the model such as scalar potential, muon anomalous magnetic dipole moment, collider physics associated with Z boson from U (1) X , and dark matter physics. Carrying out numerical analysis we search for phenomenologically viable parameter region.

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Radiative seesaw models linking to dark matter candidates inspired by the DAMPE excess

Cited by 14 publications

References 42 publications

Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios

Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios

Predictive scotogenic model with flavor dependent symmetry

Lepton specific two-Higgs-doublet model based on a U(1)X gauge symmetry with dark matter

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