2020 Impact factor 3.043
Hadrons and Nuclei
Open Access
Eur. Phys. J. A 24, s2.47-s2.50 (2005)
DOI: 10.1140/epjad/s2005-04-010-6

Parity violating electron scattering at the MAMI facility in Mainz

F.E. Maas

Johannes Gutenberg Universität Mainz, Institut für Kernphysik, J.J.Becherweg 45, 55299 Mainz, Germany


(Received 15 December 2004 / Published online 08 February 2005)


We report here on a new measurement of the parity violating (PV) asymmetry in the scattering of polarized electrons on unpolarized protons performed with the setup of the A4-collaboration at the MAMI accelerator facility in Mainz. This experiment is the first to use counting techniques in a parity violation experiment. The kinematics of the experiment is complementary to the earlier measurements of the SAMPLE collaboration at the MIT Bates accelerator and the HAPPEX collaboration at Jefferson Lab. After discussing the experimental context of the experiments, the setup at MAMI and preliminary results are presented.

PACS: 12.15 Electroweak interactions - 11.30.Er Charge conjugation, parity, time reversal, and other discrete - 13.40.Gp Electromagnetic form factors - 25.30.Bf Elastic electron scattering

The Author, for the A4-Collaboration

© Società Italiana di Fisica, Springer-Verlag 2005