Late decaying axino as CDM and its lifetime bound
| dc.creator | Kim, Hang-Bae | |
| dc.creator | Kim, Jihn E. | |
| dc.date | 2001-08-10 | |
| dc.date | 2001-08-12 | |
| dc.date.accessioned | 2026-07-07T10:32:53Z | |
| dc.date.available | 2026-07-07T10:32:53Z | |
| dc.description | The axino with mass in the GeV region can be cold dark matter(CDM) in the galactic halo. However, if R-parity is broken, for example by the bilinear terms $μ_α$, then axino($\tilde a$) can decay to $ν+γ$. In this case, the most stringent bound on the axino lifetime comes from the diffuse photon background and we obtain that the axino lifetime should be greater than $3.9\times 10^{24}Ω_{\tilde a}h$ s which amounts to a very small bilinear R-parity violation, i.e. $μ_α<1$ keV. This invalidates the atmospheric neutrino mass generation through bilinear R-violating terms within the context of axino CDM. | |
| dc.description | Latex file of 11 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0108101 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0108101 | |
| dc.identifier | Phys.Lett.B527:18-22,2002 | |
| dc.identifier | doi:10.1016/S0370-2693(01)01507-6 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178915 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Late decaying axino as CDM and its lifetime bound | |
| dc.type | text |