Science
Decoupled Heavy Neutrinos Offer New Solution to Cosmic Matter Asymmetry
Physicists from the University of Southampton and the Indian Institute of Technology Kanpur have introduced a cosmological model explaining why matter survived the Big Bang instead of annihilating against antimatter. The study demonstrates that a slowly decaying, decoupled heavy neutrino temporarily dominated the cosmic energy density, shifting fundamental interaction temperatures. Published in October 2026, the discovery provides a measurable mechanism that could be confirmed through primordial gravitational waves.
Letizia Giugliano
