Subleading-twist effects in single-spin asymmetries in semi-inclusive deep-inelastic scattering on a longitudinally polarized hydrogen target
May, 20056 pages
Published in:
- Phys.Lett.B 622 (2005) 14-22
e-Print:
- hep-ex/0505042 [hep-ex]
Report number:
- DESY-05-072
Experiments:
Citations per year
Abstract: (Elsevier)
Single-spin asymmetries in the semi-inclusive production of charged pions in deep-inelastic scattering from transversely and longitudinally polarized proton targets are combined to evaluate the subleading-twist contribution to the longitudinal case. This contribution is significantly positive for π+ mesons and dominates the asymmetries on a longitudinally polarized target previously measured by Hermes . The subleading-twist contribution for π− mesons is found to be small.- 13.88.+e
- 13.60.-r
- 14.65.-q
- 14.20.Dh
- electron p: deep inelastic scattering
- polarized target: longitudinal
- pi+: electroproduction
- pi-: electroproduction
- spin: asymmetry
- angular distribution: moment
References(35)
Figures(3)