APS » PROLA » Phys. Rev. Lett. » Volume 85 » Issue 4

Phys. Rev. Lett. 85, 708 - 711 (2000)

First Determination of Generalized Polarizabilities of the Proton by a Virtual Compton Scattering Experiment
Download: PDF (219 kB) or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

J. Roche et al.
Show All Authors/Affiliations

Received 31 January 2000

Absolute differential cross sections for the reaction ep→epγ have been measured at a four-momentum transfer with virtuality Q2  =  0.33 GeV2 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.


©2000 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v85/p708
DOI: 10.1103/PhysRevLett.85.708
PACS: 13.60.Fz, 14.20.Dh

* Present address: College of William and Mary, Williamsburg, VA 23187-8795.
† Present address: Florida International University, Miami, FL 33199.
‡ Corresponding author. Electronic address: ndhose@cea.fr
§ Present address: IPN d'Orsay, F91406 Orsay Cedex, France.
** Present address: ISN de Grenoble, F38026 Grenoble Cedex, France.
††
‡‡ Present address: Laboratoire SUBATECH, F44307 Nantes cedex 3, France.
Present address: University of Glasgow, Department of Physics and Astronomy, Glasgow G12 8QQ, Scotland, United Kingdom.

[ Abstract  |  Previous article  |  Next article  |  Issue 4 ]