Can Zee-Babu model implemented with scalar dark matter explain both Fermi-LAT 130 GeV γ-ray excess and neutrino physics?

Assuming that the underlying model satisfies some general requirements such as renormalizability and CP conservation, we calculate the non-relativistic one-loop cross section for any self-conjugate dark matter particle annihilating into two photons. We accomplish this by carefully classifying all possible one-loop diagrams and, from them, reading off the dark matter interactions with the particles running in the loop. Our approach is general and leads to the same results found in the literature for popular dark matter candidates such as the neutralinos of the MSSM, minimal dark matter, inert Higgs and Kaluza-Klein dark matter.

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“…Early studies focused on certain supersymmetric DM candidates [35][36][37][38][39][40][41], culminating with the works of…”

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confidence: 99%

General calculation of the cross section for dark matter annihilations into two photons

Garcia-Cely

Rivera

2017

J. Cosmol. Astropart. Phys.

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“…In this model, neutrinos get mass from two-loop radiative corrections, which can fit current neutrino data. Moreover, the singly and doubly charged scalars that are new in the model can explain the large annihilation cross section of a dark matter pair into two photons as hinted-at by the recent analysis of the Fermi γ-ray space telescope data 24 , if the new charged scalars are relatively light and have large couplings to a pair of dark matter particles. These new scalars can also enhance the B(H → γγ), as the recent LHC results may suggest.…”

Section: Introductionmentioning

confidence: 93%

Neutrino mixing with nonzero θ₁₃ in Zee–Babu model

Long¹,

Vien

2014

Int. J. Mod. Phys. A

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The exact solution for the neutrino mass matrix of the Zee-Babu model is derived. Tribimaximal mixing imposes conditions on the Yukawa couplings, from which the normal mass hierarchy is preferred. The derived conditions give a possibility of Majorana maximal CP violation in the neutrino sector. We have shown that non-zero θ 13 is generated if Yukawa couplings between leptons almost equal to each other. The model gives some regions of the parameters where neutrino mixing angles and the normal neutrino mass hierarchy obtained consistent with the recent experimental data.

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“…In the following analysis, we consider four different scenarios for the coupling constants: (I) f ≤ √ 4π and µ 1S,2S,SS ≪ 0.1 GeV, (II) f ≤ √ 4π and µ SS ≫ µ 1S,2S , (III) f ≤ 0.8 and µ 2S ≫ µ 1S,SS , (IV) f ≤ 0.8 and µ 1S ≫ µ 2S,SS . For scenario (I), DM dominantly annihilate into ρρ and/or aa via interaction with coupling f as figure 1-(A) [4,[23][24][25] and aa via process in figure 1-(B). In the scenario (II), final states of DM annihilation process is same as scenario (I) where figure 1-(B) is added.…”

Section: Dark Matter Physicsmentioning

confidence: 99%

Dark matter physics in neutrino specific two Higgs doublet model

Baek¹,

Nomura²

2017

J. High Energ. Phys.

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Although the seesaw mechanism is a natural explanation for the small neutrino masses, there are cases when the Majorana mass terms for the right-handed neutrinos are not allowed due to symmetry. In that case, if neutrino-specific Higgs doublet is introduced, neutrinos become Dirac particles and their small masses can be explained by its small VEV. We show that the same symmetry, which we assume a global U(1) X , can also be used to explain the stability of dark matter. In our model, a new singlet scalar breaks the global symmetry spontaneously down to a discrete Z 2 symmetry. The dark matter particle, lightest Z 2 -odd fermion, is stabilized. We discuss the phenomenology of dark matter: relic density, direct detection, and indirect detection. We find that the relic density can be explained by a novel Goldstone boson channel or by resonance channel. In the most region of parameter space considered, the direct detections is suppressed well below the current experimental bound. Our model can be further tested in indirect detection experiments such as FermiLAT gamma ray searches or neutrinoless double beta decay experiments.

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Can Zee-Babu model implemented with scalar dark matter explain both Fermi-LAT 130 GeV γ-ray excess and neutrino physics?

Cited by 28 publications

References 59 publications

General calculation of the cross section for dark matter annihilations into two photons

General calculation of the cross section for dark matter annihilations into two photons

Neutrino mixing with nonzero θ₁₃ in Zee–Babu model

Dark matter physics in neutrino specific two Higgs doublet model

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Can Zee-Babu model implemented with scalar dark matter explain both Fermi-LAT 130 GeV γ-ray excess and neutrino physics?

Cited by 28 publications

References 59 publications

General calculation of the cross section for dark matter annihilations into two photons

General calculation of the cross section for dark matter annihilations into two photons

Neutrino mixing with nonzero θ13 in Zee–Babu model

Dark matter physics in neutrino specific two Higgs doublet model

Contact Info

Product

Resources

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Neutrino mixing with nonzero θ₁₃ in Zee–Babu model