Supernova constraints on massive (pseudo)scalar coupling to neutrinos

In this paper we derive constraints on the emission of a massive (pseudo)scalar S from annihilation of neutrinos in the core of supernovae through the dimension-4 coupling νν S, as well as the effective dimension-5 operator 1/Λ(νν)(SS). While most of earlier studies have focused on massless or ultralight scalars, our analysis involves scalar with masses of order eV-GeV which can be copiously produced during {the explosion of supernovae, whose core temperature is} generally of order T∼ O(10) MeV. From the luminosity and deleptonization arguments regarding the observation of SN1987A, we exclude a large range of couplings 10-12 ≲SCOPUS: ar.j