Testing heavy neutral leptons produced in the supernovae explosions with future neutrino detectors

2023/01/17 by Syvolap, Vsevolod · 1 citation
#FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2301.07052

Abstract

Hypothetical particles called heavy neutral leptons (HNLs) can be produced in large quantities in the cores of supernovae during the first seconds of the explosion. These particles then decay, producing secondary energetic neutrinos that can be detected by neutrino detectors. In this paper, I identify a region of the HNL parameter space that could be tested using this method, assuming a supernova explosion at distances from 0.2 to 10 kpc. The range of HNLs masses m_N ∼ 160-700 MeV and lifetimes of τ_N \gtrsim 0.02 seconds can be probed using the Hyper-Kamiokande neutrino detector. This region of the parameter space is complementary to existing bounds from primordial nucleosynthesis and to the expected sensitivity of the future SHiP experiment, thus covering a gap in our current knowledge of HNLs up to masses of m_N ≃ 400 MeV.

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