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arXiv · hep-ex/0007053

The first determination of Generalized Polarizabilities of the proton by a Virtual Compton Scattering experiment

The VCS·A1 collaboration
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Abstract

Absolute differential cross sections for the reaction (e+p -> e+p+gamma) have been measured at a four-momentum transfer with virtuality Q^2=0.33 GeV^2 and polarization ε= 0.62 in the range 33.6 to 111.5 MeV/c for the momentum of the outgoing photon in the photon-proton center of mass frame. The experiment has been performed with the high resolution spectrometers at the Mainz Microtron MAMI. From the photon angular distributions, two structure functions which are a linear combination of the generalized polarizabilities have been determined for the first time.

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The VCS, A1 collaboration. 2000-07-26. The first determination of Generalized Polarizabilities of the proton by a Virtual Compton Scattering experiment. https://doi.org/10.1103/physrevlett.85.708

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