Are there real goldstone bosons associated with broken lepton number?

Chikashige, Yuji; Mohapatra, Rabindra N.; Peccei, R.D.

doi:10.1016/0370-2693(81)90011-3

Cited by 1,029 publications

(816 citation statements)

References 6 publications

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“…(ii) Majorana particles with a pseudo-scalar coupling with a Majoron [9,10] and a sterile neutrino giving rise to the decay ν j → ν s + J. The Majoron should be dominantly singlet to comply with the constraints from LEP data on the Z decay to invisible particles.…”

Section: Jhep02(2018)055mentioning

confidence: 99%

A study of invisible neutrino decay at DUNE and its effects on θ23 measurement

Choubey

Goswami

Pramanik

2018

J. High Energ. Phys.

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Abstract:We study the consequences of invisible decay of neutrinos in the context of the DUNE experiment. We assume that the third mass eigenstate is unstable and decays to a light sterile neutrino and a scalar or a pseudo-scalar. We consider DUNE running in 5 years neutrino and 5 years antineutrino mode and a detector volume of 40 kt. We obtain the expected sensitivity on the rest-frame life-time τ 3 normalized to the mass m 3 as τ 3 /m 3 > 4.50 × 10 −11 s/eV at 90% C.L. for a normal hierarchical mass spectrum. We also find that DUNE can discover neutrino decay for τ 3 /m 3 > 4.27 × 10 −11 s/eV at 90% C.L. In addition, for an unstable ν 3 with an illustrative value of τ 3 /m 3 = 1.2 × 10 −11 s/eV, the no decay case could get disfavoured at the 3σ C.L. At 90% C.L. the expected precision range for this true value is obtained as 1.71 × 10 −11 > τ 3 /m 3 > 9.29 × 10 −12 in units of s/eV. We also study the correlation between a non-zero τ 3 /m 3 and standard oscillation parameters and find an interesting correlation in the appearance and disappearance channels with the mixing angle θ 23 . This alters the octant sensitivity of DUNE, favorably (unfavorably) for true θ 23 in the lower (higher) octant. The effect of a decaying neutrino does not alter the hierarchy or CP violation discovery sensitivity of DUNE in a discernible way.

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Section: Jhep02(2018)055mentioning

confidence: 99%

A study of invisible neutrino decay at DUNE and its effects on θ23 measurement

Choubey

Goswami

Pramanik

2018

J. High Energ. Phys.

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“…This could be called "soft breaking" of L since such mass terms have dimension 3, which is less than 4. Another possibility is that L is an exact global symmetry which is spontaneously broken by some scalar field Φ, resulting in right-handed neutrino masses and a Goldstone boson called the Majoron [10]. The idea is to consider a scalar Φ with L = 2 giving mass to the right-handed neutrinos N c via the Yukawa interaction…”

Section: Jhep03(2017)174mentioning

confidence: 99%

Supersymmetric Majoron inflation

King

Ludl

2017

J. High Energ. Phys.

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We propose supersymmetric Majoron inflation in which the Majoron field Φ responsible for generating right-handed neutrino masses may also be suitable for giving low scale "hilltop" inflation, with a discrete lepton number Z N spontaneously broken at the end of inflation, while avoiding the domain wall problem. In the framework of nonminimal supergravity, we show that a successful spectral index can result with small running together with small tensor modes. We show that a range of heaviest right-handed neutrino masses can be generated, m N ∼ 10 1 − 10 16 GeV, consistent with the constraints from reheating and domain walls.

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“…After symmetry breaking characterized by the lepton number violation scale v L = σ [16,17] and the usual electroweak scale Φ ≡ v 2 the resulting seesaw scheme is characterized by singlet and doublet neutrino mass terms, described by…”

Section: Preliminary Considerationsmentioning

confidence: 99%

“…Apart from such intrinsic significance, the measurement of nonzero r implies important constraints on inflationary models of the Universe. Here we consider the simplest type-I seesaw scenario [10][11][12][13][14][15] 1 of neutrino mass generation in which lepton number is promoted to a spontaneously broken symmetry, within the standard SU(3) c ⊗ SU(2) L ⊗ U(1) Y gauge framework [16,17]. In order to consistently formulate the spontaneous violation of lepton number within the SU(3) c ⊗ SU(2) L ⊗ U(1) Y model, one requires the presence of a lepton-number-carrying complex scalar singlet, σ, coupled to the singlet "right-handed" neutrinos ν R .…”

Section: Introductionmentioning

confidence: 99%

Inflation and majoron dark matter in the neutrino seesaw mechanism

Boucenna

Morisi²,

Shafi

et al. 2014

Phys. Rev. D

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We propose that inflation and dark matter have a common origin, connected to the neutrino mass generation scheme. As a model we consider spontaneous breaking of global lepton number within the seesaw mechanism. We show that it provides an acceptable inflationary scenario consistent with the recent CMB B-mode observation by the BICEP2 experiment. The scheme may also account for the baryon asymmetry of the Universe through leptogenesis for reasonable parameter choices.

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Are there real goldstone bosons associated with broken lepton number?

Cited by 1,029 publications

References 6 publications

A study of invisible neutrino decay at DUNE and its effects on θ23 measurement

A study of invisible neutrino decay at DUNE and its effects on θ23 measurement

Supersymmetric Majoron inflation

Inflation and majoron dark matter in the neutrino seesaw mechanism

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