Abstract
The ratio of the proton's elastic electromagnetic form factors, , was obtained by measuring and , the transverse and the longitudinal recoil proton polarization, respectively. For elastic , is proportional to . Simultaneous measurement of and in a polarimeter provides good control of the systematic uncertainty. The results for the ratio show a systematic decrease as increases from 0.5 to , indicating for the first time a definite difference in the spatial distribution of charge and magnetization currents in the proton.
- Received 4 October 1999
DOI:https://doi.org/10.1103/PhysRevLett.84.1398
©2000 American Physical Society