Dr. Ulrich Mueller
Institute for Nuclear Physics, Johnnes Gutenberg University, Mainz, Germany
"Form factor measurements at MAMI"
Tuesday 21st March, 14:00h, F-201
An overview of the form factor programme of the A1 Collaboration at
MAMI is given. Results on the electromagnetic form factors of the
proton measured with elastic electron scattering at four-momentum
transfers Q^2 between 0.003 and 2 (GeV/c)^2 are reported, which
allow extraction of the electric and magnetic radii of the proton.
Data for scattering on the deuteron have also been taken and their
analysis is ongoing.
A novel technique to measure the electric form factor of the proton
at very low Q^2 using initial state radiation is presented and
results from a pilot experiment are shown.
The design of a neutron recoil polarimeter for measurement of the
electric form factor in a future double-polarisation experiment is
presented.