Abstract
Abstract
Light hypothetical particles with masses up to $$ \mathcal{O}(100) $$
O
100
MeV can be produced in the core of supernovae. Their subsequent decays to neutrinos can produce a flux component with higher energies than the standard flux. We study the impact of heavy neutral leptons, Z′ bosons, in particular $$ \textrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$
U
1
L
μ
−
L
τ
and U(1)B−L gauge bosons, and majorons coupled to neutrinos flavor-dependently. We obtain new strong limits on these particles from no events of high-energy SN 1987A neutrinos and their future sensitivities from observations of galactic supernova neutrinos.
Publisher
Springer Science and Business Media LLC
Reference189 articles.
1. G.G. Raffelt, Stars as laboratories for fundamental physics: The astrophysics of neutrinos, axions, and other weakly interacting particles, University of Chicago Press (1996).
2. G.G. Raffelt, Neutrinos and the stars, Proc. Int. Sch. Phys. Fermi 182 (2012) 61 [arXiv:1201.1637] [INSPIRE].
3. G. Raffelt and D. Seckel, Bounds on Exotic Particle Interactions from SN 1987a, Phys. Rev. Lett. 60 (1988) 1793 [INSPIRE].
4. W. Keil et al., A fresh look at axions and SN-1987A, Phys. Rev. D 56 (1997) 2419 [astro-ph/9612222] [INSPIRE].
5. J.H. Chang, R. Essig and S.D. McDermott, Supernova 1987A Constraints on Sub-GeV Dark Sectors, Millicharged Particles, the QCD Axion, and an Axion-like Particle, JHEP 09 (2018) 051 [arXiv:1803.00993] [INSPIRE].