Constraints on the parity-violating couplings of a new gauge boson
| dc.creator | Bouchiat, C. | |
| dc.creator | Fayet, P. | |
| dc.date | 2004-10-19 | |
| dc.date.accessioned | 2026-07-07T12:44:19Z | |
| dc.date.available | 2026-07-07T12:44:19Z | |
| dc.description | High-energy particle physics experiments allow for the possible existence of a new light, very weakly coupled, neutral gauge boson (the U boson). This one permits for light (spin-1/2 or spin-0) particles to be acceptable Dark Matter candidates, by inducing sufficient (stronger than weak) annihilation cross sections into e+e-. They could be responsible for the bright 511 keV gamma ray line observed by INTEGRAL from the galactic bulge. Such a new interaction may have important consequences, especially at lower energies. Parity-violation atomic-physics experiments provide strong constraints on such a U boson, if its couplings to quarks and electrons violate parity. With the constraints coming from an unobserved axionlike behaviour of this particle, they privilegiate a pure vector coupling of the U boson to quarks and leptons, unless the corresponding symmetry is broken sufficiently above the electroweak scale. | |
| dc.description | 6 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0410260 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0410260 | |
| dc.identifier | Phys.Lett.B608:87-94,2005 | |
| dc.identifier | doi:10.1016/j.physletb.2004.12.065 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/220727 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on the parity-violating couplings of a new gauge boson | |
| dc.type | text |