Elastic Photoproduction of $ρ^{0}$ Mesons at HERA
| dc.creator | Aid, S. | |
| dc.date | 1996-01-15 | |
| dc.date.accessioned | 2026-07-07T11:46:42Z | |
| dc.date.available | 2026-07-07T11:46:42Z | |
| dc.description | The cross section for the elastic photoproduction of \r0 mesons ($γp \to ρ^0 p$) has been measured with the H1 detector at HERA for two average photon-proton centre-of-mass energies of 55 and 187 GeV. TheFcenterline lower energy point was measured by observing directly the $ρ^{0}$ decay giving a cross section of $9.1\pm 0.9 (\stat)\pm 2.5 (\syst) μ$b. The logarithmic slope parameter of the differential cross section, ${\rm d}σ/{\rm d}t$, is found to be $10.9 \pm 2.4 (\stat) \pm 1.1 (\syst) $GeV$^{-2}$. The \r0 decay polar angular distribution is found to be consistent with s-channel helicity conservation. The higher energy cross section was determined from analysis of the lower part of the hadronic invariant mass spectrum of diffractive photoproduction and found to be $13.6\pm 0.8 (\stat)\pm 2.4 (\syst) μ$b. | |
| dc.description | 25 pages, latex, 9 Figures appended as uuencoded file | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9601004 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9601004 | |
| dc.identifier | Nucl.Phys.B463:3-32,1996 | |
| dc.identifier | doi:10.1016/0550-3213(96)00045-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202315 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Elastic Photoproduction of $ρ^{0}$ Mesons at HERA | |
| dc.type | text |