Fiorillo Damiano F G, Raffelt Georg G, Vitagliano Edoardo
Niels Bohr International Academy, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, 80805 München, Germany.
Phys Rev Lett. 2023 Jul 14;131(2):021001. doi: 10.1103/PhysRevLett.131.021001.
Majoron-like bosons would emerge from a supernova (SN) core by neutrino coalescence of the form νν→ϕ and ν[over ¯]ν[over ¯]→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.
类马约拉纳玻色子将通过中微子合并形式νν→ϕ和ν̅ν̅→ϕ从超新星（SN）核心产生，能量范围在100兆电子伏特左右。随后衰变为所有味的（反）中微子会提供一个通量分量，其能量比来自“中微子球”的通常通量大得多。在1987A超新星的神冈二号和欧文 - 密歇根 - 布鲁克黑文信号中未出现能量范围在100兆电子伏特左右的事件，这意味着总能量中由此发射的不到1%，并且对于100电子伏特≲mϕ≲100兆电子伏特的情况，给出了对马约拉纳中微子耦合g≲10^(-9) 兆电子伏特/mϕ的最强约束。将我们的新论点扩展到其他假设的弱相互作用粒子是很直接的。
