Non-conservation of Lepton Numbers in the Neutrino Sector Could Change the Prospects for Core Collapse Supernova Explosions
arXiv:2410.01080 · doi:10.1103/gnp5-4y8k
Abstract
We show that interactions violating the conservation of lepton numbers in the neutrino sector could significantly alter the standard low entropy picture for the pre-supernova collapsing core of a massive star. A rapid neutrino-antineutrino equilibration leads to entropy generation and enhanced electron capture and, hence, a lower electron fraction than in the standard model. This would affect the downstream core evolution, the prospects for a supernova explosion, and the emergent neutrino signal. If realized by lepton-number-violating neutrino self-interactions (LNV SI), the relevant mediator mass and coupling ranges can be probed by future accelerator-based experiments.
5+9 pages, 2+6 figures. Matches version published in Phys. Rev. Lett., added discussion on alpha particles in the Supplemental Material
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