Abstract
Double-polarization observables in the reaction have been measured at . The experiment was performed at the spectrometer setup of the A1 Collaboration using the 855 MeV polarized electron beam provided by the Mainz Microtron (MAMI) and a recoil proton polarimeter. From the double-polarization observables the structure function is extracted for the first time, with the value , using the low-energy theorem for virtual Compton scattering. This structure function provides a hitherto unmeasured linear combination of the generalized polarizabilities of the proton.
- Received 22 May 2015
DOI:https://doi.org/10.1103/PhysRevC.92.054307
©2015 American Physical Society