Dark matter prospects with COSI: ALPs, PBHs and sub-GeV dark matter

نویسندگان

چکیده

Abstract We study the prospects in search of dark matter offered by newly selected NASA MeV mission COSI (Compton Spectrometer and Imager). This instrument is designed optimized to detect spectral lines, we show it offers an exquisite possibility directly decaying or annihilating into monochromatic gamma-rays. case, for example, axion-like particles (ALPs) which undergo decay two photons. Furthermore, that can lead important progress quest primordial black holes (PBHs) matter, through measurements 511 keV line from positrons produced via Hawking evaporation. also outline opportunities continuum signals, such as those expected sub-GeV annihilation/decay leptons PBH evaporation find this case improvements current bounds.

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ژورنال

عنوان ژورنال: Journal of Cosmology and Astroparticle Physics

سال: 2023

ISSN: ['1475-7516', '1475-7508']

DOI: https://doi.org/10.1088/1475-7516/2023/02/006