511 keV line constraints on feebly interacting particles from supernovae
arXiv:2112.08382 · doi:10.1103/PhysRevD.105.063026
Abstract
Feebly interacting particles with masses with O(10-100) MeV can be copiously produced by core-collapse supernovae (SNe). In this paper we consider the case of MeV-ish sterile neutrinos and dark photons mixed with ordinary neutrinos and photons, respectively. Furthermore, both sterile neutrinos and dark photons may decay into positrons on their route to Earth. Such positrons would annihilate with electrons in the Galactic medium and contribute to the photon flux in the 511 keV line. Using the SPI (SPectrometer on INTEGRAL) observation of this line improves the bounds on the mixing parameters for these particles by several orders of magnitude below what is already excluded by the SN 1987A energy-loss argument.
17 pages, 9 figures. Minor changes to match the version published on PRD
References in corpus (19)
- Revisiting the SN1987A gamma-ray limit on ultralight axion-like particles
- How to find neutral leptons of the nuMSM?
- Stellar cooling bounds on new light particles: plasma mixing effects
- Constraints on sub-GeV hidden sector gauge bosons from a search for heavy neutrino decays
- Helioscope Bounds on Hidden Sector Photons
- Cosmological Constraints on Very Dark Photons
- Precision Study of Positronium: Testing Bound State QED Theory
- Gamma-ray continuum emission from the inner Galactic region as observed with INTEGRAL/SPI
- The Fermi Large Area Telescope as a Galactic Supernovae Axionscope
- Supernova Bounds on the Dark Photon Using its Electromagnetic Decay
- Supernova bound on keV-mass sterile neutrinos reexamined
- Earth matter effects in supernova neutrinos: Optimal detector locations
- Unparticle constraints from SN1987A
- MeV sterile neutrinos in low reheating temperature cosmological scenarios
- Revisiting supernova constraints on a light CP-even scalar
- Heavy sterile neutrino emission in core-collapse supernovae: Constraints and signatures
- Supernova bounds on axion-like particles coupled with nucleons and electrons
- Constraints on positron annihilation kinematics in the inner Galaxy
- Searching for Axion-Like Particles from Core-Collapse Supernovae with Fermi LAT's Low Energy Technique