Twist-three analysis of photon electroproduction off the pion

@inproceedings{Belitsky2001TwistthreeAO,
  title={Twist-three analysis of photon electroproduction off the pion},
  author={Andrei V. Belitsky and Dario Muller and Antje Kirchner and Andreas Schafer},
  year={2001}
}
  • Andrei V. Belitsky, Dario Muller, +1 author Andreas Schafer
  • Published 2001
  • Physics
  • We study twist-three effects in spin, charge, and azimuthal asymmetries in deeply virtual Compton scattering on a spin-zero target. Contributions which are power suppressed in 1/Q generate a new azimuthal angle dependence of the cross section which is not present in the leading twist results. On the other hand the leading twist terms are not modified by the twist three contributions. They may get corrected at twist four level. In the Wandzura-Wilczek approximation these new terms in the Fourier… CONTINUE READING

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