Leptogenesis and dark matter in an inverse Seesaw from gauged B − L breaking
6 affiliations
- 1Instituto de Física Teórica UAM/CSIC, Universidad Autónoma de Madrid
- 2Universidade de São Paulo
- 3Università di Bologna
- 4INFN, Sezione di Bologna
- 5Karlsruhe Institute of Technology (KIT)
- 6Niels Bohr Institute, University of Copenhagen
Abstract
A bstract : We study a dynamical realization of the low-scale Inverse Seesaw mechanism in which the approximate B – L symmetry is gauged and spontaneously broken. Anomaly cancellation requires additional chiral fermions, one of which becomes a stable dark matter candidate after symmetry breaking, while another remains massless and contributes to dark radiation. Focusing on the regime of feeble gauge interactions, we compute the dark matter relic abundance produced via the freeze-in mechanism through the B – L gauge boson and identify the parameter space consistent with cosmological and laboratory constraints. We show that the same region naturally avoids thermalization of heavy neutral leptons, preserving the viability of ARS leptogenesis. The interplay between dark matter production, dark radiation constraints, and leptogenesis requirements leads to a predictive scenario where future cosmological surveys and intensity-frontier experiments such as SHiP can probe significant portions of the viable parameter space.
Related
- Radiative double inverse seesaw and dark matter in an alternative gauged U(1)B−L model
- Testable neutrino mass and TeV-scale leptogenesis in a D4 inverse seesaw model
- Majoron Dark Matter, High-Scale Seesaw, and Leptogenesis
- Multi-component Dark Matter in a Novel Three-Loop Inverse Scotogenic Seesaw Model
- Inelastic Self-interacting Dark Matter and LUX-ZEPLIN 248 keV Event in a Dirac Modular Inverse Seesaw
BibTeX
@article{fernandezmartinez2026leptogenesis,
title = {{Leptogenesis and dark matter in an inverse Seesaw from gauged B − L breaking}},
author = {Enrique Fernández-Martínez and Ana Luisa Foguel and Xabier Marcano and Daniel Naredo-Tuero and Vsevolod Syvolap and Kevin A. Urquía-Calderón},
journal = {Journal of High Energy Physics},
year = {2026},
month = oct,
doi = {10.1007/jhep10(2026)014},
url = {https://link.springer.com/10.1007/JHEP10(2026)014},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Leptogenesis and dark matter in an inverse Seesaw from gauged B − L breaking
AU - Enrique Fernández-Martínez
AU - Ana Luisa Foguel
AU - Xabier Marcano
AU - Daniel Naredo-Tuero
AU - Vsevolod Syvolap
AU - Kevin A. Urquía-Calderón
PY - 2026
DA - 2026/10/01
JO - Journal of High Energy Physics
DO - 10.1007/jhep10(2026)014
UR - https://link.springer.com/10.1007/JHEP10(2026)014
AB - A bstract : We study a dynamical realization of the low-scale Inverse Seesaw mechanism in which the approximate B – L symmetry is gauged and spontaneously broken. Anomaly cancellation requires additional chiral fermions, one of which becomes a stable dark matter candidate after symmetry breaking, while another remains massless and contributes to dark radiation. Focusing on the regime of feeble gauge interactions, we compute the dark matter relic abundance produced via the freeze-in mechanism through the B – L gauge boson and identify the parameter space consistent with cosmological and laboratory constraints. We show that the same region naturally avoids thermalization of heavy neutral leptons, preserving the viability of ARS leptogenesis. The interplay between dark matter production, dark radiation constraints, and leptogenesis requirements leads to a predictive scenario where future cosmological surveys and intensity-frontier experiments such as SHiP can probe significant portions of the viable parameter space.
SN - 1029-8479
ER -