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- W4313332754 abstract "The existence of eV-mass sterile neutrinos is not ruled out because of persistent experimental anomalies. Upcoming multi-messenger detections of neutron-star merger remnants could provide indirect constraints on the existence of these particles. We explore the active-sterile flavor conversion phenomenology in a two-flavor scenario (1 active + 1 sterile species) as a function of the sterile neutrino mixing parameters, neutrino emission angle from the accretion torus, and temporal evolution of the merger remnant. The torus geometry and the neutron richness of the remnant are responsible for the occurrence of multiple resonant active-sterile conversions. The number of resonances strongly depends on the neutrino emission direction above or inside the remnant torus and leads to large production of sterile neutrinos (and no antineutrinos) in the proximity of the polar axis as well as more sterile antineutrinos than neutrinos in the equatorial region. As the black hole torus evolves in time, the shallower baryon density is responsible for more adiabatic flavor conversion, leading to larger regions of the mass-mixing parameter space being affected by flavor mixing. Our findings imply that the production of sterile states could have indirect implications on the disk cooling rate, its outflows, and related electromagnetic observables which remain to be assessed." @default.
- W4313332754 created "2023-01-06" @default.
- W4313332754 creator A5008482382 @default.
- W4313332754 creator A5012917438 @default.
- W4313332754 creator A5050111334 @default.
- W4313332754 date "2022-12-29" @default.
- W4313332754 modified "2023-09-26" @default.
- W4313332754 title "Resonant production of light sterile neutrinos in compact binary merger remnants" @default.
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- W4313332754 doi "https://doi.org/10.1103/physrevd.106.123030" @default.
- W4313332754 hasPublicationYear "2022" @default.
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