The first virtual Compton scattering experiment at MAMI

Kerhoas, S. et al. (2000) The first virtual Compton scattering experiment at MAMI. Nuclear Physics A, A666-6, 44c -47c. (doi: 10.1016/S0375-9474(99)00624-7)

Abstract

Virtual Compton scattering, i.e. the exclusive reaction gamma *p to gamma 'p' with gamma * denoting a virtual photon, provides new insights on the internal structure of the proton. Below pi /sup 0/ production threshold, this experiment measures the generalized polarizabilities of the proton as defined by Guichon and Drechsel. These new electromagnetic observables, functions of Q/sup 2/, enlarge the concept of electric ( alpha ) and magnetic ( beta ) polarizabilities in real Compton scattering (Q/sup 2/=0). The first VCS experiment of this kind was measured at the three spectrometer facility at the Mainz Microtron MAMI for Q/sup 2/=0.33 GeV/sup 2/ and we present in this paper the preliminary results.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Rosner, Professor Guenther
• Authors: Kerhoas, S., Bartsch, P., Berthot, J., Bertin, P.Y., Breton, V., Boeglin, W.U., Bohm, R., d'Hose, N., Caprano, T., Derber, S., Degrande, N., Ding, M., Distler, M., Ducret, J.E., Edelhoff, R., Ewald, I., Fonvieille, H., Friedrich, J., Friedrich, J.M., Geiges, R., Gousset, T., Guichon, P.A.M., Holvoet, H., Hyde-Wright, C., Jennewein, P., Kahrau, M., Korn, M., Kramer, H., Krygier, K.W., Kunde, V., Lannoy, B., Lhuillier, D., Liesenfeld, A., Marchand, C., Marchand, D., Martino, J., Merkel, H., Merle, K., Merle, P., de Meyer, G., Mougey, J., Neuhausen, R., Pospischil, T., Quemener, G., Ravel, O., Roblin, Y., Roche, J., Rohe, D., Rosner, G., Ryckbosch, D., Sauer, P., Schmieden, H., Schardt, S., Tamas, G., Tytgat, M., Vanderhaeghen, M., Van Hoorebeke, L., Van de Vyver, R., van de Wiele, J., Vernin, P., Wagner, A., and Walcher, T.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Nuclear Physics A
• ISSN: 0375-9474