Eur. Phys. J. A (2007) 31: 610-612
https://doi.org/10.1140/epja/i2006-10208-4

QNP 2006

Measurement of the generalized polarizabilities of the proton in virtual Compton scattering at MAMI

Department of Subatomic and Radiation Physics, Ghent University, 9000, Ghent, Belgium

^* e-mail: peter@inwfsun1.ugent.be

Received: 25 October 2006
Accepted: 1 November 2006
Published online: 26 February 2007

Abstract

Virtual Compton scattering off the proton has been studied at Q ² = 0.33 (GeV/c)² at the MAMI accelerator in Mainz (Germany). The goal of the experiment is to measure the generalized polarizabilities (GPs) of the proton using the double polarized e p→e' p'γ reaction. This paper reports the measurement of the unpolarized photon electroproduction cross-section for the new data and the extraction of two linear combinations of GPs, which are essential for the analysis of the double spin asymmetry.