Observation of a Single-Spin Azimuthal Asymmetry in Semi-Inclusive Pion Electro-Production
| dc.creator | Airapetian, A. | |
| dc.date | 1999-10-28 | |
| dc.date.accessioned | 2026-07-07T13:03:50Z | |
| dc.date.available | 2026-07-07T13:03:50Z | |
| dc.description | Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distribution in the azimuthal angle phi of the pion relative to the lepton scattering plane was observed for pi+ electro-production on a longitudinally polarized hydrogen target. The corresponding analyzing power in the sin(phi) moment of the cross section is 0.022 +/- 0.005 +/- 0.003. This result can be interpreted as the effect of terms in the cross section involving chiral-odd spin distribution functions in combination with a time-reversal-odd fragmentation function that is sensitive to the transverse polarization of the fragmenting quark. | |
| dc.description | 5 pages of RevTex, 3 ps figures, 2 tables | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9910062 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9910062 | |
| dc.identifier | Phys.Rev.Lett.84:4047-4051,2000 | |
| dc.identifier | doi:10.1103/PhysRevLett.84.4047 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/226951 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of a Single-Spin Azimuthal Asymmetry in Semi-Inclusive Pion Electro-Production | |
| dc.type | text |