Abstract.
A measurement of the parity-violating asymmetry in elastic scattering of polarized electrons on protons is currently running within the A4 Collaboration at the MAMI facility in Mainz. The aim is to reveal the contribution of strange quarks to the form factors of the nucleon at a Q 2 = 0.23 GeV2. The expected asymmetry without strangeness is around 5.4 x 10-6. After 600 hours of asymmetry data taking, an accuracy of 1 x 10-6 has been achieved.
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Received: 30 September 2002, Published online: 22 October 2003
PACS:
13.40.Gp Electromagnetic form factors - 11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries - 14.20.Dh Protons and neutrons - 13.60.-r Photon and charged-lepton interactions with hadrons
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Baunack, S., The A4 Collaboration. Parity-violating electron scattering at MAMI. Eur. Phys. J. A 18, 159–161 (2003). https://doi.org/10.1140/epja/i2002-10292-4
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DOI: https://doi.org/10.1140/epja/i2002-10292-4