SouthamptonPhysicists propose a heavy neutrino tipped the universe toward matter.
The Big Bang should have made equal matter and antimatter, which annihilate on contact.
The heaviest decoupled right-handed neutrino interacts so weakly that current experiments miss it, but could alter the early universe’s expansion.
No experiment has detected the particle, which remains hypothetical.
Rishav Roshan and Sudipta Show say future experiments could test the model, published in Physical Review Letters.
How each outlet framed it
- 404 Media
- pinpoints the heaviest decoupled right-handed neutrino as an overlooked answer to matter-antimatter asymmetry, testable in future experiments
Sources: 404 Media