Cosmic Neutrinos from Unstable Relic Particles
We derive constraints on the relic abundance of a generic particle of mass $\sim~1-10^{14}$ TeV which decays into neutrinos at cosmological epochs, using data from the Fr\'ejus and IMB nucleon decay detectors and the Fly's Eye air shower array. The lifetime of such unstable particles which...
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| Format: | Journal article |
| Language: | English |
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1992
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| _version_ | 1826279579730313216 |
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| author | Gondolo, P Gelmini, G Sarkar, S |
| author_facet | Gondolo, P Gelmini, G Sarkar, S |
| author_sort | Gondolo, P |
| collection | OXFORD |
| description | We derive constraints on the relic abundance of a generic particle of mass $\sim~1-10^{14}$ TeV which decays into neutrinos at cosmological epochs, using data from the Fr\'ejus and IMB nucleon decay detectors and the Fly's Eye air shower array. The lifetime of such unstable particles which may constitute the dark matter today is bounded to be greater than $\sim~10^{14}-10^{18}$ yr, depending on the mass. For lifetimes shorter than the age of the universe, neutrino energy losses due to scattering and the expansion redshift become important and set limits to the ability of neutrino observatories to probe the early universe. |
| first_indexed | 2024-03-07T00:00:52Z |
| format | Journal article |
| id | oxford-uuid:75e69209-08b9-4a16-9c0c-876c9c6741e6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:00:52Z |
| publishDate | 1992 |
| record_format | dspace |
| spelling | oxford-uuid:75e69209-08b9-4a16-9c0c-876c9c6741e62022-03-26T20:12:19ZCosmic Neutrinos from Unstable Relic ParticlesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:75e69209-08b9-4a16-9c0c-876c9c6741e6EnglishSymplectic Elements at Oxford1992Gondolo, PGelmini, GSarkar, SWe derive constraints on the relic abundance of a generic particle of mass $\sim~1-10^{14}$ TeV which decays into neutrinos at cosmological epochs, using data from the Fr\'ejus and IMB nucleon decay detectors and the Fly's Eye air shower array. The lifetime of such unstable particles which may constitute the dark matter today is bounded to be greater than $\sim~10^{14}-10^{18}$ yr, depending on the mass. For lifetimes shorter than the age of the universe, neutrino energy losses due to scattering and the expansion redshift become important and set limits to the ability of neutrino observatories to probe the early universe. |
| spellingShingle | Gondolo, P Gelmini, G Sarkar, S Cosmic Neutrinos from Unstable Relic Particles |
| title | Cosmic Neutrinos from Unstable Relic Particles |
| title_full | Cosmic Neutrinos from Unstable Relic Particles |
| title_fullStr | Cosmic Neutrinos from Unstable Relic Particles |
| title_full_unstemmed | Cosmic Neutrinos from Unstable Relic Particles |
| title_short | Cosmic Neutrinos from Unstable Relic Particles |
| title_sort | cosmic neutrinos from unstable relic particles |
| work_keys_str_mv | AT gondolop cosmicneutrinosfromunstablerelicparticles AT gelminig cosmicneutrinosfromunstablerelicparticles AT sarkars cosmicneutrinosfromunstablerelicparticles |