Construction and phenomenological analysis of dynamical Inverse seesaw neutrino mixing model
Abstract
In this manuscript, a dynamical inverse seesaw neutrino ISS(3+1+1+1) mixing model based on the gauge symmetry U(1)B−L extended by the flavor symmetry A4× Z2 has been constructed. ISS(3+1+1+1) represents three generations of right-handed neutrinos and an extra three generation of singlets sterile neutrinos, wherein the right-handed neutrinos are triplets under A4 symmetry. Furthermore, the five scalar flavon fields are considered in the model, which reproduce neutrino oscillation data within the NuFIT 6.0 experimental range with statistical |pull|=0.01 σ. The neutrino mass hierarchy is obtained by minimizing the dynamical A4× Z2 scalar flavon ϕv potential. The effective neutrino mass parameter mββ for the neutrinoless double beta decay 0vββ has been charecterised in the manuscript. The effective neutrino mass parameter spans a finite region in the parameter space rather then being confined to a single point and it is constrained by the KamLAND-Zen excluded band. The model successfully explains active-sterile neutrino mixing and non-unitarity of the PMNS matrix is consistent with the cosmological upper bound. The minimum value of the sum of the active neutrinos' mass turns out to be mi≈ 62 (99.4) meV for Normal ordering (Inverted ordering), which lies within the range of both Planck 2018 loose cosmological limit ∑ mi<120 meV and tighter limit ∑ mi<72 meV of DESI-2024. Our model immensely favours normal ordering, in agreement with the tighter constraints reported by DESI-2024.
Related
- Testable neutrino mass and TeV-scale leptogenesis in a D4 inverse seesaw model
- Probing the dynamical inverse seesaw mechanism with low-frequency gravitational waves
- Nonstandard Solution for Anomaly Cancellation as Seesaw Neutrino Origin in the SM
- Purely flavon driven leptogenesis for exactly degenerate Dirac or Majorana neutrino mass matrix in the type-I seesaw model
- (g−2)ℓ and LFV decays in a U(1)Lμ −Lτ left-right model with inverse seesaw neutrinos
BibTeX
@misc{bisht2026construction,
title = {{Construction and phenomenological analysis of dynamical Inverse seesaw neutrino mixing model}},
author = {Manish Singh Bisht and Shuchi Bisht and Mayank Joshi and Navjot Hothi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.30981},
eprint = {2610.30981},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.30981},
note = {CC BY-SA 4.0},
}
RIS
TY - UNPB
TI - Construction and phenomenological analysis of dynamical Inverse seesaw neutrino mixing model
AU - Manish Singh Bisht
AU - Shuchi Bisht
AU - Mayank Joshi
AU - Navjot Hothi
PY - 2026
DA - 2026/10/22
PB - arXiv
DO - 10.48550/arxiv.2610.30981
UR - https://arxiv.org/abs/2610.30981
AB - In this manuscript, a dynamical inverse seesaw neutrino ISS(3+1+1+1) mixing model based on the gauge symmetry U(1)_B−L extended by the flavor symmetry A_4× Z_2 has been constructed. ISS(3+1+1+1) represents three generations of right-handed neutrinos and an extra three generation of singlets sterile neutrinos, wherein the right-handed neutrinos are triplets under A_4 symmetry. Furthermore, the five scalar flavon fields are considered in the model, which reproduce neutrino oscillation data within the NuFIT 6.0 experimental range with statistical |pull|=0.01 σ. The neutrino mass hierarchy is obtained by minimizing the dynamical A_4× Z_2 scalar flavon ϕ_v potential. The effective neutrino mass parameter m_ββ for the neutrinoless double beta decay 0vββ has been charecterised in the manuscript. The effective neutrino mass parameter spans a finite region in the parameter space rather then being confined to a single point and it is constrained by the KamLAND-Zen excluded band. The model successfully explains active-sterile neutrino mixing and non-unitarity of the PMNS matrix is consistent with the cosmological upper bound. The minimum value of the sum of the active neutrinos' mass turns out to be m_i≈ 62 (99.4) meV for Normal ordering (Inverted ordering), which lies within the range of both Planck 2018 loose cosmological limit ∑ m_i<120 meV and tighter limit ∑ m_i<72 meV of DESI-2024. Our model immensely favours normal ordering, in agreement with the tighter constraints reported by DESI-2024.
ER -