Post--Sphaleron Baryogenesis
| dc.creator | Babu, K. S. | |
| dc.creator | Mohapatra, R. N. | |
| dc.creator | Nasri, S. | |
| dc.date | 2006-06-12 | |
| dc.date | 2006-06-27 | |
| dc.date.accessioned | 2026-07-07T10:25:00Z | |
| dc.date.available | 2026-07-07T10:25:00Z | |
| dc.description | We present a new mechanism for generating the baryon asymmetry of the universe directly in the decay of a singlet scalar field $S_r$ with a weak scale mass and a high dimensional baryon number violating coupling. Unlike most currently popular models, this mechanism, which becomes effective after the electroweak phase transition, does not rely on the sphalerons for inducing a nonzero baryon number. CP asymmetry in $S_r$ decay arises through loop diagrams involving the exchange of $W^\pm$ gauge bosons, and is suppressed by light quark masses, leading naturally to a value of $η_B \sim 10^{-10}$. We show that the simplest realization of this mechanism, which uses a six quark $ΔB=2$ operator, predicts colored scalars accessible to the LHC, and neutron--antineutron oscillation within reach of the next generation experiments. | |
| dc.description | 13 pages, 4 figures, typos corrected, references and acknowledgment added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0606144 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0606144 | |
| dc.identifier | Phys.Rev.Lett.97:131301,2006 | |
| dc.identifier | doi:10.1103/PhysRevLett.97.131301 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/176396 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Post--Sphaleron Baryogenesis | |
| dc.type | text |