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

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 \\epsilon = 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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https://hal.archives-ouvertes.fr/hal-00016287
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Submitted on : Saturday, December 24, 2005 - 12:44:40 PM
Last modification on : Thursday, May 9, 2019 - 3:50:02 PM

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J. Roche, J.M. Friedrich, D. Lhuillier, P. Bartsch, D. Baumann, et al.. The first determination of Generalized Polarizabilities of the proton by a Virtual Compton Scattering experiment. Physical Review Letters, American Physical Society, 2000, 85, pp.708-711. ⟨hal-00016287⟩

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