Late-decaying Q-ball with BBN lifetime
| dc.creator | Wang, Fei | |
| dc.creator | Yang, Jin Min | |
| dc.date | 2004-08-25 | |
| dc.date | 2005-09-01 | |
| dc.date.accessioned | 2026-07-07T12:16:50Z | |
| dc.date.available | 2026-07-07T12:16:50Z | |
| dc.description | In the Affleck-Dine mechanism of baryogenesis, non-topological solitons called Q-balls can be formed. In this work we study the Q-balls which decay during the Big Bang Nucleosythesis (BBN) era. We show that such late-decaying baryonic Q-balls with lifetime of about 10^3 s can provide a new developing mechanism for the BBN through a rolling baryon to photon ratio η, which can naturally explain the discrepancy of BBN prediction with the WMAP data on ^7Li abundance. For the late-decaying leptonic Q-balls with lifetime of about 10^6 s, we find that their decay product, gravitino, can serve as a dark matter candidate without overclosing the universe and, at the same time, can give an explanation of the approximate equality of dark and baryon matter densities. | |
| dc.description | version in Nucl.Phys.B (refs added) | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0408271 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0408271 | |
| dc.identifier | Nucl.Phys.B709:409-418,2005 | |
| dc.identifier | doi:10.1016/j.nuclphysb.2004.12.034 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/211928 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Late-decaying Q-ball with BBN lifetime | |
| dc.type | text |