Conference paper

The experimental challenge of virtual Compton scattering above 8 GeV

P. Y. Bertin ; Université Blaise Pascal/IN2P3, Clermont-Ferrand, France
Y. Roblin ; Université Blaise Pascal/IN2P3, Clermont-Ferrand, France
C. E. Hyde-Wright ; Old Dominion University, Norfolk VA, U.S.A.

Abstract

We discuss the experimental issues confronting measurements of the virtualCompton-scattering (VCS) reaction ep→epγ with electron beams of energy 6 – 30 GeV. We specifically address the kinematics of deeply-virtual-Comptonscattering (deep inelastic scattering, with coincident detection of the exclusive real photon nearly parallel to the virtual photon direction) and large transverse momentum VCS (high energy VCS of arbitrary Q2, and the recoil proton emitted with high-momentum transverse to the virtual photon direction). We discuss the experimental equipment necessary for these measurements. For the deeply virtual Compton scattering, we emphasize the importance of the Bethe-Heitler – Compton interference terms that can be measured with the electron-positron (beam charge) asymmetry, and the electron beam helicity asymmetry

Keywords

deeply virtual Compton scattering; Bethe-Heitler – Compton interference terms; electron-positron (beam charge) asymmetry; electron-beam helicity asymmetry

Hrčak ID:

305346

URI

https://hrcak.srce.hr/305346

Publication date:

1.6.1999.

Article data in other languages: croatian

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