Radiative neutrino mass with ℤ 3 dark matter: from relic density to LHC signatures

Ding, Ran; Han, Zhi-Long; Liao, Yi; Wang, Xie

doi:10.1007/jhep05(2016)030

Cited by 24 publications

(12 citation statements)

References 205 publications

(274 reference statements)

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“…They rely on the introduction of a leptoquark and a diquark [299][300][301] and lead to operator O 11 . Similarly, there is a version without light fields in the loop [222,[302][303][304]. The models in Ref.…”

Section: Clbz-1mentioning

confidence: 99%

From the Trees to the Forest: A Review of Radiative Neutrino Mass Models

et al. 2017

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A plausible explanation for the lightness of neutrino masses is that neutrinos are massless at tree level, with their mass (typically Majorana) being generated radiatively at one or more loops. The new couplings, together with the suppression coming from the loop factors, imply that the new degrees of freedom cannot be too heavy (they are typically at the TeV scale). Therefore, in these models there are no large mass hierarchies and they can be tested using different searches, making their detailed phenomenological study very appealing. In particular, the new particles can be searched for at colliders and generically induce signals in lepton-flavor and lepton-number violating processes (in the case of Majorana neutrinos), which are not independent from reproducing correctly the neutrino masses and mixings. The main focus of the review is on Majorana neutrinos. We order the allowed theory space from three different perspectives: (i) using an effective operator approach to lepton number violation, (ii) by the number of loops at which the Weinberg operator is generated, (iii) within a given loop order, by the possible irreducible topologies. We also discuss in more detail some popular radiative models which involve qualitatively different features, revisiting their most important phenomenological implications. Finally, we list some promising avenues to pursue.

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Section: Clbz-1mentioning

confidence: 99%

From the Trees to the Forest: A Review of Radiative Neutrino Mass Models

et al. 2017

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“…The original model, firstly propose by Ma [25], is to accommodate two important missing pieces of SM: no-zero Majorana neutrino mass and dark matter (DM) in a unified framework. The main idea is based on the assumption that the DM candidates, whose the stability is protected by an ad hoc Z 2 or Z 3 [26] 3 anomaly free conditions. Then the effective ν L ν R operator is induced after the spontaneous breaking of U (1) B−L at high scale.…”

Section: Introductionmentioning

confidence: 99%

$$Z'$$ Z ′ portal dark matter in $$B-L$$ B - L scotogenic Dirac model

2018

Self Cite

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In this paper, we perform a detail analysis on the phenomenology of Z portal scalar and Dirac fermion dark matter in B − L scotogenic Dirac model. Unconventional B − L charge Q is assigned to the right-handed neutrino ν R in order to realise scotogenic Dirac neutrino mass at one-loop level, where three typical value Q = − 1 4 , − 4, 3 2 are chosen to illustrate. Observational properties involving dilepton signature at LHC, relativistic degrees of freedom N eff , dark matter relic density, direct and indirect detections are comprehensively studied. Combined results of these observables for the benchmark scenarios imply that the resonance region M DM ∼ M Z /2 is the viable parameter space. Focusing on the resonance region, a scanning for TeV-scale dark matter is also performed to obtain current allowed and future prospective parameter space.

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“…Indirect detection of Z 3 DM was considered in [55,56]. Further developments in connection with radiative neutrino mass were studied in [57][58][59]. Z 3 DM with several dark singlets was considered in [60].…”

Section: Introductionmentioning

confidence: 99%

Improved bounds on ℤ3 singlet dark matter

Hektor

Hryczuk

Kannike

2019

J. High Energ. Phys.

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We reconsider complex scalar singlet dark matter stabilised by a Z 3 symmetry. We refine the stability bounds on the potential and use constraints from unitarity on scattering at finite energy to place a stronger lower limit on the direct detection cross section. In addition, we improve the treatment of the thermal freeze-out by including the evolution of the dark matter temperature and its feedback onto relic abundance. In the regions where the freeze-out is dominated by resonant or semi-annihilation, the dark matter decouples kinetically from the plasma very early, around the onset of the chemical decoupling. This results in a modification of the required coupling to the Higgs, which turns out to be at most few per cent in the semi-annihilation region, thus giving credence to the standard approach to the relic density calculation in this regime. In contrast, for dark matter mass just below the Higgs resonance, the modification of the Higgs invisible width and direct and indirect detection signals can be up to a factor 6.7. The model is then currently allowed at 56.8 GeV to 58.4 GeV (depending on the details of early kinetic decoupling) M S 62.8 GeV and at M S 122 GeV if the freeze-out is dominated by semi-annihilation. We show that the whole large semi-annihilation region will be probed by the near-future measurements at the XENONnT experiment.

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Radiative neutrino mass with ℤ 3 dark matter: from relic density to LHC signatures

Cited by 24 publications

References 205 publications

From the Trees to the Forest: A Review of Radiative Neutrino Mass Models

From the Trees to the Forest: A Review of Radiative Neutrino Mass Models

$$Z'$$ Z ′ portal dark matter in $$B-L$$ B - L scotogenic Dirac model

Improved bounds on ℤ3 singlet dark matter

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