Implications of the dark large mixing angle solution and a fourth sterile neutrino for neutrinoless double beta decay

Deepthi, K. N.; Goswami, Sumanta; Vishnudath, K. N.; Poddar, Tanmay Kumar

doi:10.1103/physrevd.102.015020

Cited by 4 publications

(4 citation statements)

References 64 publications

(89 reference statements)

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“…The allowed parameter space for LMA with NH is shown in Fig. ( 9) and (10). Also, the Majorana phases are correlated in such a way that 0νββ decay amplitude |M ee | is found to be vanishing in this case.…”

Section: Class Ementioning

confidence: 94%

“…Furthermore, the texture allows for both CP conserving and violating solutions as is evident from Fig. (10).…”

Section: Class Ementioning

confidence: 99%

“…The existence of near degeneracy in LMA and DLMA solutions have imperative implications for models of neutrino mass and associated phenomenology. Recently, the LMA and DLMA phenomenology of Majorana neutrino mass matrix has been studied assuming (i) zero textures of the neutrino mass matrix, M ν [7][8][9](ii) in presence of one-sterile neutrino [10]. Texture-zeros in the effective low energy Majorana neutrino mass matrix may have seesaw origin in which they can be realized from the zeros in M D and M R [11].…”

Section: Introductionmentioning

confidence: 99%

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Investigating Two-zero Textures of Inverse Neutrino Mass Matrix under the Lamp Post of LMA and DLMA Solutions and Symmetry Realization

Singh¹,

Kashav²,

Verma³

2022

Preprint

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In this paper, we study the phenomenological consequences of two-zero textures of inverse neutrino mass matrix(M −1 ν ). In M l and MD diagonal basis, zero(s) in heavy right-handed neutrino mass matrix correspond to zero(s) in inverse neutrino mass matrix(M −1 ν ). There are fifteen possibilities to have two-zero textures of M −1 ν . In order to study complete phenomenology of the model, we confront these textures with the latest neutrino data including large mixing angle(LMA) and dark -large mixing angle(DLMA) degenerate solutions, later of which originates if neutrinos exhibit non-standard interactions with matter. Out of fifteen possibilities only seven(B2, B4, C1, C3, D1, D2, E1) are found to be in consonance with LMA and/or DLMA solutions. In general, we find that the textures for which (M −1 ν )11 = 0 are disallowed. The textures B2, B4, C1, C3 and D2 textures are found to be allowed under both LMA and DLMA descriptions. Also, these textures are necessarily CP violating. However, the textures which are not consistent with DLMA paradigm, for example D1 and E1, allow both CP conserving and violating solutions. The generic feature of the class of model discussed in the present work is the existence of neutrino mass hierarchy degeneracy in a particular texture.For example, if a texture is allowed by LMA solution with "X" neutrino mass hierarchy then, if DLMA is allowed, it is allowed with the same hierarchy "X". Interestingly, amongst all the seven texture, textures with (M −1 ν )23 = 0 are found to be either disallowed or are consistent with LMA(D1 and E1) description only. We have, also, obtained the implication of the model for 0νββ decay amplitude |Mee|. Except for textures D1 and E1, the predicted 3σ lower bound on |Mee| is O(10 −2 ) which is within the sensitivity reach of 0νββ decay experiments like SuperNEMO, KamLAND-Zen, NEXT, and nEXO. For example, the non-observation of 0νββ decay down to these high sensitivities will refute all the textures except D1 and E1. Furthermore, we have proposed a flavor model, based on discrete non-Abelian flavor group A4, wherein such textures of M −1 ν can be realized within Type-I seesaw setting.

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Section: Class Ementioning

confidence: 94%

“…Furthermore, the texture allows for both CP conserving and violating solutions as is evident from Fig. (10).…”

Section: Class Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigating Two-zero Textures of Inverse Neutrino Mass Matrix under the Lamp Post of LMA and DLMA Solutions and Symmetry Realization

Singh¹,

Kashav²,

Verma³

2022

Preprint

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show abstract

“…The existence of near degeneracy in LMA and LMA-D solutions have imperative implications for models of neutrino mass and associated phenomenology. Recently, the LMA and LMA-D phenomenology of Majorana neutrino mass matrix has been studied assuming (i) zero textures of the neutrino mass matrix, M ν [11][12][13] (ii) in presence of one-sterile neutrino [14]. Texture-zeros in the effective low energy Majorana neutrino mass matrix may have seesaw origin in which they can be realized from the zeros in M D and M R [15].…”

Section: Introductionmentioning

confidence: 99%

Investigating two-zero textures of inverse neutrino mass matrix under the lamp post of LMA and LMA-D solutions and symmetry realization

2022

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In this work we have investigated the phenomenological consequences of two-zero textures of inverse neutrino mass matrix ($$M_{\nu }^{-1}$$ M ν - 1 ) in light of the large mixing angle (LMA) and large mixing angle-dark (LMA-D) solutions, later of which originates if neutrinos exhibit non-standard interactions with matter. Out of fifteen possibilities, only seven two-zero textures of $$M_{\nu }^{-1}$$ M ν - 1 are found to be phenomenologically allowed under LMA and/or LMA-D descriptions. In particular, five textures are in consonance with both LMA and LMA-D solutions and are necessarily CP violating while remaining two textures are found to be consistent with LMA solution only. The textures with vanishing (1, 1) element of $$M_{\nu }^{-1}$$ M ν - 1 are, in general, disallowed. All the textures allowed under LMA and LMA-D solutions follow the same neutrino mass hierarchy. Furthermore, textures with vanishing (2, 3) element of $$M_{\nu }^{-1}$$ M ν - 1 are found to be either disallowed or are consistent with LMA description only. We have, also, obtained the implication of the model for $$0\nu \beta \beta $$ 0 ν β β decay amplitude $$|M_{ee}|$$ | M ee | . For most of the textures the calculated $$3\sigma $$ 3 σ lower bound on $$|M_{ee}|$$ | M ee | is $$\mathcal {O}(10^{-2})$$ O ( 10 - 2 ) , which is within the sensitivity reach of $$0\nu \beta \beta $$ 0 ν β β decay experiments. We have, also, proposed a flavor model based on discrete non-Abelian flavor group $$A_4$$ A 4 wherein such textures of $$M_{\nu }^{-1}$$ M ν - 1 can be realized within Type-I seesaw setting.

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Lepton masses and mixings, and muon anomalous magnetic moment in an extended B − L model with the type-I seesaw mechanism

Vien

Long

Hernández

2022

Progress of Theoretical and Experimental Physics

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We propose a B − L model combined with the S4 × Z3 × Z4 discrete symmetry which successfully explains the recent 3 + 1 sterile - active neutrino data. The smallness of neutrino mass is obtained through the type-I seesaw mechanism. The active-active and sterile-active neutrino mixing angles are predicted to be consistent with the recent constraints in which $0.3401\, (0.3402) \le \sin ^2\theta _{12}\le 0.3415\, (0.3416), \, 0.456\, (0.433) \le \sin ^2\theta _{23}\le 0.544\, (0.545), \, 2.00\, (2.018) \le 10^2\times \sin ^2\theta _{13}\le 2.405\, (2.424),\, \, 156 \, (140.8) \le \delta ^{(\circ )}_{CP}\le 172\, (167.2)$ for normal (inverted) ordering of the three neutrino scenario, and $0.015 \, (0.022) \le s^2_{14}\le 0.045 \, (0.029), \, 0.005 (0.0095)\le s^2_{24}\le 0.012\, (0.012), \, 0.003 \, (0.009)\le s^2_{34} \le 0.011$ for normal (inverted) ordering of the 3 + 1 neutrino scenario. Our model predicts flavour conserving leptonic neutral scalar interactions and successfully explains the muon g − 2 anomaly.

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Implications of the dark large mixing angle solution and a fourth sterile neutrino for neutrinoless double beta decay

Cited by 4 publications

References 64 publications

Investigating Two-zero Textures of Inverse Neutrino Mass Matrix under the Lamp Post of LMA and DLMA Solutions and Symmetry Realization

Investigating Two-zero Textures of Inverse Neutrino Mass Matrix under the Lamp Post of LMA and DLMA Solutions and Symmetry Realization

Investigating two-zero textures of inverse neutrino mass matrix under the lamp post of LMA and LMA-D solutions and symmetry realization

Lepton masses and mixings, and muon anomalous magnetic moment in an extended B − L model with the type-I seesaw mechanism

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