511 keV line constraints on feebly interacting particles from supernovae

• Verfasst von: Calore, Francesca [VerfasserIn]
• Verfasst von: Carenza, Pierluca [VerfasserIn]
• Verfasst von: Giannotti, Maurizio [VerfasserIn]
• Verfasst von: Jaeckel, Joerg [VerfasserIn]
• Verfasst von: Lucente, Giuseppe [VerfasserIn]
• Verfasst von: Mastrototaro, Leonardo [VerfasserIn]
• Verfasst von: Mirizzi, Alessandro [VerfasserIn]
• Titel: 511 keV line constraints on feebly interacting particles from supernovae
• Verf.angabe: Francesca Calore, Pierluca Carenza, Maurizio Giannotti, Joerg Jaeckel, Giuseppe Lucente, Leonardo Mastrototaro, and Alessandro Mirizzi
• E-Jahr: 2022
• Jahr: 29 March 2022
• Umfang: 16 S.
• Fussnoten: Gesehen am 13.09.2022
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2022
• Band/Heft Quelle: 105(2022), 6 vom: März, Artikel-ID 063026, Seite 1-16
• ISSN Quelle: 2470-0029
• DOI: doi:10.1103/PhysRevD.105.063026
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1816501786

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 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.