On the lifetime of a cold dark matter particle and the cosmological diffuse photon background
| dc.creator | Palle, D. | |
| dc.date | 1999-10-27 | |
| dc.date | 1999-11-05 | |
| dc.date.accessioned | 2026-07-07T04:08:31Z | |
| dc.date.available | 2026-07-07T04:08:31Z | |
| dc.description | We show that a Majorana heavy neutrino with a mass O(100TeV) is a good candidate particle for cold dark matter. It can be responsible for the majority of the cosmological diffuse photon background owing to lifetime of the order of O(10^(25)s), dominantly fixed by the radiative two-body decay. The lifetime is suppressed by two mechanisms: the leptonic GIM cancellation and the see-saw weak coupling suppression. As a fermion cold dark matter particle, a heavy neutrino favours the average mass density of the Universe constrained by the Einstein-Cartan cosmology. | |
| dc.description | 18 pages, LaTeX style, numerics revisited, one reference added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9910512 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9910512 | |
| dc.identifier | Nuovo Cim. B115 (2000) 445-458 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/49554 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | On the lifetime of a cold dark matter particle and the cosmological diffuse photon background | |
| dc.type | text |