Dark Neutrino Portal to Explain MiniBooNE Excess

Bertuzzo, Enrico; Jana, Sudip; Machado, Pedro A. N.; Funchal, R. Zukanovich

doi:10.1103/physrevlett.121.241801

Cited by 187 publications

(236 citation statements)

References 43 publications

(52 reference statements)

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“…Without lost of generality, we can write the solutions in terms of just one parameter [53][54][55], that we choose to be l after fix r = 1. Then, as shown in the Appendix, the full family of solutions for a fixed l can be obtained after rescaling all the X-charges by a factor r. In particular, the fermiophobic [28][29][30] solution used in the previous sections, U(1) D , corresponds to the rescaling r = 0 of the U(1) R solution: D = X(0, 0). The one parameter solution is shown in column U(1) X of Table 2.…”

Section: Beyond the Minimal Model: Cosmological And Collider Constraintsmentioning

confidence: 99%

Dirac neutrino mass generation from a Majorana messenger

2020

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The radiative type-I seesaw has been already implemented to explain the lightness of Majorana neutrinos with both Majorana and Dirac heavy fermions, and the lightness of Dirac neutrinos with Dirac heavy fermions. In this work we present a minimal implementation of the radiative type-I seesaw with light Dirac neutrinos and heavy Majorana fermions. An inert doublet and a complex singlet scalar complete the dark sector which is protected by an Abelian fermiophobic gauge symmetry that also forbids tree level mass contributions for the full set of light neutrinos. A fermion vector-like extension of the model is also proposed where the light right-handed neutrinos can thermalize in the primordial plasma and the extra gauge boson can be directly produced at colliders. In particular, the current upper bound on ∆N eff reported by PLANCK points to large ratios M Z /g 40 TeV which can be competitive with collider constraint for g sufficiently large in the ballpark of the Standard Model values, while future cosmic microwave background experiments may probe all the no minimal models presented here.

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Section: Beyond the Minimal Model: Cosmological And Collider Constraintsmentioning

confidence: 99%

Dirac neutrino mass generation from a Majorana messenger

2020

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“…These test neutrino couplings to hadrons and probe the internal structure of hadronic states [2][3][4][5][6][7][8]. Increasingly precise measurements of cross sections allow increasingly precise tests of neutrino mixing and beyond the Standard Model physics [9][10][11][12][13][14][15]. Understanding the cross section is also crucial to neutrino astrophysics [16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Neutrino-nucleus cross sections for W -boson and trident production

Zhou

Beacom

2020

Phys. Rev. D

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The physics of neutrino-nucleus cross sections is a critical probe of the Standard Model and beyond. A precise understanding is also needed to accurately deduce astrophysical neutrino spectra. At energies above ∼ 5 GeV, the cross section is dominated by deep inelastic scattering, mediated by weak bosons. In addition, there are subdominant processes where the hadronic coupling is through virtual photons, γ * : (on-shell) W -boson production (e.g., where the underlying interaction is ν +γ * → − +W + ) and trident production (e.g., where it is ν +γ * → ν + − 1 + + 2 ). These processes become increasingly relevant at TeV-PeV energies. We undertake the first systematic approach to these processes (and those with hadronic couplings through virtual W and Z bosons), treating them together, avoiding common approximations, considering all neutrino flavors and final states, and covering the energy range 10 -10 8 GeV. In particular, we present the first complete calculation of W -boson production and the first calculation of trident production at TeV-PeV energies. When we use the same assumptions as in prior work, we recover all of their major results. In a companion paper [1], we show that these processes should be taken into account for IceCube-Gen2.

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“…Depending on these limits the new (heavy) neutrinos added to the active (light) neutrinos may have masses at different ranges none of which has been so far excluded from the experiment. It should be noted that if the physics of the 3-4-1 model is at around TeV scale, such as that of the LHC and near future accelerators, there may exist light heavy neutrinos (at an eV-keV scale) attracting great interest in particle physics and cosmology (see, for example, [49][50][51][52][53]). For M N at the order of 10 2 GeV considered in [48] the scale of physics of 3-4-1 model, if existing, would be too high in order to be discovered at the LHC and other present accelerators.…”

Section: Resultsmentioning

confidence: 99%

Neutrino masses in an $$SU(4)\otimes U(1)$$-electroweak model with a scalar decuplet

Vân

Dinh

et al. 2019

Eur. Phys. J. C

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A neutrino mass model is suggested within an SU (4) × U (1) -electroweak theory. The smallness of neutrino masses can be guaranteed by a seesaw mechanism realized through Yukawa couplings to a scalar SU (4)-decuplet. In this scheme the light active neutrinos are accompanied by heavy neutrinos, which may have masses at different scales, including those within eV-MeV scales investigated quite intensively in both particle physics and astrophysics/cosmology. The flavour neutrinos are superpositions of light neutrinos and a small fraction of heavy neutrinos with the mixing to be determined by the model's parameters (Yukawa coupling coefficients or symmetry breaking scales). The distribution shape of the Yukawa couplings can be visualized via a model-independent distribution of the neutrino mass matrix elements derived by using the current experimental data. The absolute values of these Yukawa couplings are able to be determined if the symmetry breaking scales are known, and vice versa. With reference to several current and near future experiments, detectable bounds of these heavy neutrinos at different mass scales are discussed and estimated.

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Dark Neutrino Portal to Explain MiniBooNE Excess

Cited by 187 publications

References 43 publications

Dirac neutrino mass generation from a Majorana messenger

Dirac neutrino mass generation from a Majorana messenger

Neutrino-nucleus cross sections for W -boson and trident production

Neutrino masses in an $$SU(4)\otimes U(1)$$-electroweak model with a scalar decuplet

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