arXiv Astrophysics#science
A Minimal Dark $SU(2)$ Origin of a Massless Dirac Neutrinotranslating…
Factuality: 70/100UnknownarXiv Media House
arXiv:2605.28923v1 Announce Type: cross
Abstract: We propose a gauge-symmetry origin of a rank-two Dirac neutrino mass matrix that enforces one exactly massless neutrino, while being consistent with the oscillation data, as well as cosmological constraints. The mechanism relies on a minimal dark $SU(2)_D$ gauge symmetry under which one right-handed-neutrino-like Weyl fermion is charged, thereby forbidding its Standard Model Yukawa coupling. Quantum consistency then fixes the minimal dark-sector