E-viri
Recenzirano
Odprti dostop
-
Fiorillo, Damiano F G; Raffelt, Georg G; Vitagliano, Edoardo
Physical review letters, 07/2023, Letnik: 131, Številka: 2Journal Article
Majoron-like bosons would emerge from a supernova (SN) core by neutrino coalescence of the form νν→ϕ and νover ¯νover ¯→ϕ with 100-MeV-range energies. Subsequent decays to (anti)neutrinos of all flavors provide a flux component with energies much larger than the usual flux from the "neutrino sphere." The absence of 100-MeV-range events in the Kamiokande-II and Irvine-Michigan-Brookhaven signal of SN 1987A implies that less than 1% of the total energy was thus emitted and provides the strongest constraint on the Majoron-neutrino coupling of g≲10^{-9} MeV/m_{ϕ} for 100 eV≲m_{ϕ}≲100 MeV. It is straightforward to extend our new argument to other hypothetical feebly interacting particles.
