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Perturbative QCD calculation of real and virtual Compton scattering

Glennys R. Farrar and Huayi Zhang

  • Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08855

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Phys. Rev. D 41, 3348 – Published 1 June, 1990Erratum Phys. Rev. D 42, 2413 (1990)

DOI: https://doi.org/10.1103/PhysRevD.41.3348

Abstract

We present the predictions of perturbative QCD for Compton scattering as a function of photon virtuality. Individual helicity amplitudes are given, along with formulas to permit calculation of the eN→e′N′γ amplitudes. We discover remarkable structure in some of the amplitudes as a function of photon virtuality. Since eN→e′N′γ contains a contribution from Bethe-Heitler scattering, whose magnitude and phase are known, the phases of the virtual Compton amplitudes can in principle be measured by interference with it. It has been shown that the leading-twist behavior of high-energy, large-angle Compton scattering is not affected by soft physics; thus at sufficiently high energies these predictions provide a stringent test of QCD.

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Erratum

Erratum: Perturbative QCD calculation of real and virtual Compton scattering

Glennys R. Farrar and Huayi Zhang
Phys. Rev. D 42, 2413 (1990)

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Outline

Information

Phys. Rev. D 41, 3348– Published 1 June, 1990
  • Received 29 September 1989

© 1990 American Physical Society

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