Light and superlight sterile neutrinos in the minimal radiative inverse seesaw model

Dev, P. S. Bhupal; Pilaftsis, Apostolos

doi:10.1103/physrevd.87.053007

Cited by 88 publications

(59 citation statements)

References 104 publications

(168 reference statements)

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“…In ref. [777], it was shown that one of the sterile states could be at the keV-scale, having very small mixing 10 −5 with the active neutrinos, thus serving as a potentially WDM candidate. Depending on the masses of the other two sterile states, one could consider several possibilities, e.g.…”

Section: 23mentioning

confidence: 99%

A White Paper on keV sterile neutrino Dark Matter

Adhikari

Agostini

et al. 2017

J. Cosmol. Astropart. Phys.

372

316

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Abstract. We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved -cosmology, astrophysics, nuclear, and particle physics -in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. Here, we first review the physics motivation for sterile neutrino Dark Matter, based on challenges and tensions in purely cold Dark Matter scenarios. We then round out the discussion by critically summarizing all known constraints on sterile neutrino Dark Matter arising from astrophysical observations, laboratory experiments, and theoretical considerations. In this context, we provide a balanced discourse on the possibly positive signal from X-ray observations. Another focus of the paper concerns the construction of particle physics models, aiming to explain how sterile neutrinos of keV-scale masses could arise in concrete settings beyond the Standard Model of elementary particle physics. The paper ends with an extensive review of current and future astrophysical and laboratory searches, highlighting new ideas and their experimental challenges, as well as future perspectives for the discovery of sterile neutrinos.

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Section: 23mentioning

confidence: 99%

A White Paper on keV sterile neutrino Dark Matter

Adhikari

Agostini

et al. 2017

J. Cosmol. Astropart. Phys.

372

316

View full text Add to dashboard Cite

show abstract

“…In discussing physics beyond the Standard Model scenario one has to incorporate these measured parameters in the analysis pertaining to oscillations involving sterile neutrinos. Models involving one (3+1), two (3+2) and three (3+3) [43,51,[54][55][56][57][58][59][60] sterile neutrinos have been proposed to explain the discussed discrepancies where many simple parametrization of the matrix U have been used [56,61].…”

Section: The Mixing Matrixmentioning

confidence: 99%

Detection of ultra-high-energy neutrinos by IceCube: sterile neutrino scenario

2014

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The short-baseline neutrino oscillation experiments, the excess of radiation from the measurement of the cosmic microwave background radiation, the necessity of the nonbaryonic dark matter candidate, and the depletion of the neutrino flux in IceCube all seem to hint at new physics beyond the standard model. An economical way to address these issues is to invoke the existence of sterile neutrinos. We present simple extensions of the standard model with additionally three sterile neutrinos and discuss the corresponding PMNS like neutrino flavor mixing matrix. The noteworthy features of the sterile neutrino scenario advocated here are that the lightest one is almost degenerate with one of the active neutrinos, the second sterile has mass of order eV, and the heaviest one is in the keV range. In the present scenario, the short-baseline anomaly is explained through m 2 ∼ 1 eV 2 , the depletion of the muon neutrino flux in IceCube is explained through m 2 ∼ 4.0 × 10 −16 eV 2 , and the dark matter problem is addressed through m 2 ∼ 1 keV 2 . Our proposed mixing matrix is also compatible with the observed neutrino oscillation data. We show that the highenergy muon and the tau neutrino fluxes from Gamma Ray Bursts can be depleted in IceCube by as much as 38 and 43 %, respectively. These substantial depletions in both muon and tau neutrino fluxes are due to their small but sizable mixing with the sterile neutrinos.

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“…to the neutrino mass matrix (23). This matrix has the same form shown in the inverse seesaw models [17,[25][26][27]. Hence the active neutrino masses will be nonzero.…”

Section: Neutral Lepton Massesmentioning

confidence: 89%

“…[12,13], controlled by the texture λ (20), seems much more constrained. Note that the m ν in (27) keep only main contributions from loops containing light charged leptons, where mixing terms with order O( ) are ignored. With u around 1 TeV and light new charged leptons, contributions from these lepton mediations to m ν will be significant, implying that their masses can be free parameters for fitting neutrinos data without much changes of μ,τ .…”

Section: Neutral Lepton Massesmentioning

confidence: 99%

Probing neutrino and Higgs sectors in $$\text{ SU(2) }_1 \times \text{ SU(2) }_2 \times \text{ U(1) }_Y $$ SU(2) 1 × SU(2) 2 × U(1) Y model with lepton-flavor non-universality

et al. 2017

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The neutrino and Higgs sectors in the SU(2) 1 × SU(2) 2 × U(1) Y model with lepton-flavor non-universality are discussed. We show that active neutrinos can get Majorana masses from radiative corrections, after adding only new singly charged Higgs bosons. The mechanism for the generation of neutrino masses is the same as in the Zee models. This also gives a hint to solving the dark matter problem based on similar ways discussed recently in many radiative neutrino mass models with dark matter. Except the active neutrinos, the appearance of singly charged Higgs bosons and dark matter does not affect significantly the physical spectrum of all particles in the original model. We indicate this point by investigating the Higgs sector in both cases before and after singly charged scalars are added into it. Many interesting properties of physical Higgs bosons, which were not shown previously, are explored. In particular, the mass matrices of charged and CP-odd Higgs fields are proportional to the coefficient of triple Higgs coupling μ. The mass eigenstates and eigenvalues in the CP-even Higgs sector are also presented. All couplings of the SM-like Higgs boson to normal fermions and gauge bosons are different from the SM predictions by a factor c h , which must satisfy the recent global fit of experimental data, namely 0.995 < |c h | < 1. We have analyzed a more general diagonalization of gauge boson mass matrices, then we show that the ratio of the tangents of the W -W and Z -Z mixing angles is exactly the cosine of the Weinberg angle, implying that number of parameters is reduced by 1. Signals of new physics from decays of new heavy fermions a e-mail: lthue@iop.vast.vn b e-mail: arbuzov@theor.jinr.ru c e-mail: ntkngan@ctu.edu.vn d e-mail: hoangngoclong@tdt.edu.vn (corresponding author) and Higgs bosons at LHC and constraints of their masses are also discussed.

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Light and superlight sterile neutrinos in the minimal radiative inverse seesaw model

Cited by 88 publications

References 104 publications

A White Paper on keV sterile neutrino Dark Matter

A White Paper on keV sterile neutrino Dark Matter

Detection of ultra-high-energy neutrinos by IceCube: sterile neutrino scenario

Probing neutrino and Higgs sectors in $$\text{ SU(2) }_1 \times \text{ SU(2) }_2 \times \text{ U(1) }_Y $$ SU(2) 1 × SU(2) 2 × U(1) Y model with lepton-flavor non-universality

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