A measurement of the t dependence of the helicity structure of diffractive rho meson electroproduction at HERA
| dc.creator | H1 Collaboration | |
| dc.creator | Adloff, C. | |
| dc.date | 2002-03-14 | |
| dc.date.accessioned | 2026-07-07T11:46:35Z | |
| dc.date.available | 2026-07-07T11:46:35Z | |
| dc.description | The helicity structure of the diffractive electroproduction of rho mesons, e + p -> e + rho + Y, is studied in a previously unexplored region of large four-momentum transfer squared at the proton vertex, t: 0 < t' < 3 GeV^2, where t' = |t| - |t|_min. The data used are collected with the H1 detector at HERA in the kinematic domain 2.5 < Q^2 < 60 GeV^2, 40 < W < 120 GeV. No t dependence of the r^04_00 spin density matrix element is found. A significant t dependent helicity non-conservation from the virtual photon to the rho meson is observed for the spin density matrix element combinations r^5_00+2r^5_11 and r^1_00+2r^1_11. These t dependences are consistently described by a perturbative QCD model based on the exchange of two gluons. | |
| dc.description | 20 pages, 4 figures, 1 table | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0203022 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0203022 | |
| dc.identifier | Phys.Lett.B539:25-39,2002 | |
| dc.identifier | doi:10.1016/S0370-2693(02)02035-X | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202276 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | A measurement of the t dependence of the helicity structure of diffractive rho meson electroproduction at HERA | |
| dc.type | text |