Lepton flavor violating New Physics and supernova explosion
Oleg Lychkovskiy, Sergei Blinnikov, Mikhail Vysotsky

TL;DR
This paper explores how non-standard lepton flavor violation interactions, mediated by scalar bileptons, could alter supernova dynamics and neutrino signals, potentially facilitating supernova explosions.
Contribution
It introduces a model with scalar bileptons that can induce observable lepton flavor violation effects in supernovae, consistent with current experimental constraints.
Findings
Lepton flavor violation can increase neutrino luminosity during supernova collapse.
Scalar bileptons with TeV-mass can equilibrate electron and non-electron leptons within 1-100 ms.
A parameter space exists where lepton flavor violation effects are both observable and experimentally allowed.
Abstract
Electrons and electron neutrinos in the inner core of the core-collapse supernova are highly degenerate and therefore numerous during a few seconds of explosion. In contrast, leptons of other flavors are non-degenerate and therefore relatively scarce. This is due to lepton flavor conservation. If this conservation law is broken by some non-standard interactions, electron neutrinos are converted to muon and tau-neutrinos, and electrons -- to muons. This affects the supernova dynamics and the supernova neutrino signal in several ways. In particular, the total neutrino luminosity in the first second of the collapse is increased due to the larger free path of the non-electron neutrinos. This effect may have important consequences as the increase of the neutrino luminosity is known to facilitate the explosion. We consider an extension of the Standard Model by scalar bileptons which mediate…
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Taxonomy
TopicsNeutrino Physics Research · Particle physics theoretical and experimental studies · Astrophysics and Cosmic Phenomena
