Single-spin azimuthal asymmetry in exclusive electroproduction of pi^+ mesons
| dc.creator | HERMES Collaboration | |
| dc.creator | Airapetian, A. | |
| dc.date | 2001-12-17 | |
| dc.date | 2002-04-18 | |
| dc.date.accessioned | 2026-07-07T12:01:42Z | |
| dc.date.available | 2026-07-07T12:01:42Z | |
| dc.description | A single-spin asymmetry in the distribution of exclusively produced pi^+ mesons azimuthally around the virtual photon direction relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off longitudinally polarized protons. Integrated over the experimental acceptance, the sin ϕmoment of the polarization asymmetry of the cross section is measured to be -0.18 +/- 0.05 (stat.) +/- 0.02 (syst.). The asymmetry is also studied as a function of the relevant kinematic variables, and its magnitude is found to grow with decreasing x and increasing -t and vanish at t -> t_min (where x is the Bjorken scaling variable and t is the squared four-momentum transferred to the nucleon). | |
| dc.description | PLB accepted version, 6 pages, 4 figures, LaTex (revtex4), corrected typo | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0112022 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0112022 | |
| dc.identifier | Phys.Lett.B535:85-92,2002 | |
| dc.identifier | doi:10.1016/S0370-2693(02)01780-X | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207184 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Single-spin azimuthal asymmetry in exclusive electroproduction of pi^+ mesons | |
| dc.type | text |