Double-spin asymmetries in the cross section of $ρ^0$ and $ϕ$ production at intermediate energies
| dc.creator | HERMES collaboration | |
| dc.creator | Airapetian, A. | |
| dc.date | 2003-02-10 | |
| dc.date | 2003-04-16 | |
| dc.date.accessioned | 2026-07-07T12:25:53Z | |
| dc.date.available | 2026-07-07T12:25:53Z | |
| dc.description | Double-spin asymmetries in the cross section of electroproduction of $ρ^0$ and $ϕ$ mesons on the proton and deuteron are measured at the HERMES experiment. The photoabsorption asymmetry in exclusive $ρ^0$ electroproduction on the proton exhibits a positive tendency. This is consistent with theoretical predictions that the exchange of an object with unnatural parity contributes to exclusive $ρ^0$ electroproduction by transverse photons. The photoabsorption asymmetry on the deuteron is found to be consistent with zero. Double-spin asymmetries in $ρ^0$ and $ϕ$ meson electroproduction by quasi-real photons were also found to be consistent with zero; the asymmetry in the case of the $ϕ$ meson is compatible with a theoretical prediction which involves $s\bar{s}$ knockout from the nucleon. | |
| dc.description | 8 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0302012 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0302012 | |
| dc.identifier | Eur.Phys.J.C29:171-179,2003 | |
| dc.identifier | doi:10.1140/epjc/s2003-01232-3 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214712 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Double-spin asymmetries in the cross section of $ρ^0$ and $ϕ$ production at intermediate energies | |
| dc.type | text |