Measurement of the transverse target-spin asymmetry associated with deeply virtual Compton scattering on the proton
| dc.creator | Ye, Zhenyu | |
| dc.date | 2005-12-06 | |
| dc.date.accessioned | 2026-07-07T06:54:02Z | |
| dc.date.available | 2026-07-07T06:54:02Z | |
| dc.description | Measurements of deeply virtual Compton scattering (DVCS) made at HERMES using 27.6 GeV $e^\pm$ beams and various internal polarized or unpolarized gaseous targets are discussed. Results are reported on the transverse target-spin asymmetry (TTSA) associated with DVCS, extracted from data accumulated in 2002-2004 with the $e^+$ beam on a transversely polarized hydrogen target. TTSA amplitudes leading in twist and $α_S$ are given as a function of $-t$, $x_B$ and $Q^2$ in the kinematic range $|t|<0.7$ GeV$^2$, $0.03<x_B<0.35$ and $1<Q^2<10$ GeV$^2$. Theoretical predictions based on a phenomenological model of generalized parton distributions (GPDs) agree with the experimental results. With additional statistics accumulated in 2005, one may constrain the $u$-quark total angular momentum in the nucleon within this model. | |
| dc.description | 4 pages, 2 figures, to appear in the proceedings of the International Europhysics Conference on High Energy Physics, July 21st - 27th 2005, Lisboa, Portugal | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0512010 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0512010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/105800 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the transverse target-spin asymmetry associated with deeply virtual Compton scattering on the proton | |
| dc.type | text |