Subleading-twist effects in single-spin asymmetries in semi-inclusive deep-inelastic scattering on a longitudinally polarized hydrogen target

Collaboration
May, 2005
6 pages
Published in:
  • Phys.Lett.B 622 (2005) 14-22
e-Print:
Report number:
  • DESY-05-072
Experiments:

Citations per year

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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