Scientists Propose Forgotten Neutrino Explains Universe's Matter-Antimatter Asymmetry

Researchers from the University of Southampton and the Indian Institute of Technology Kanpur suggest that a long-overlooked heavy neutrino may explain why matter survived the Big Bang, allowing for the existence of stars, planets, and life. This particle's slow decay and temporary dominance in the early universe could have triggered a matter-dominated period, leaving detectable gravitational wave signals. The findings were published in Physical Review Letters.