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Study of Two-Photon Exchange via the Beam Transverse Single Spin Asymmetry in Electron-Proton Elastic Scattering at Forward Angles over a Wide Energy Range
B. Gou, J. Arvieux, K. Aulenbacher +26
We report on a new measurement of the beam transverse single spin asymmetry in electron-proton elastic scattering, , at five beam energies from 315.1 MeV to 1508.4…
The G0 Experiment: Apparatus for Parity-Violating Electron Scattering Measurements at Forward and Backward Angles
G0 Collaboration, D. Androic, D. S. Armstrong +127
In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order…
Realtime calibration of the A4 electromagnetic lead fluoride calorimeter
S. Baunack, D. Balaguer Ríos, L. Capozza +15
Sufficient energy resolution is the key issue for the calorimetry in particle and nuclear physics. The calorimeter of the A4 parity violation experiment at MAMI is a segmented calo…
Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q**2=0.22 (GeV/c)**2
S. Baunack, K. Aulenbacher, D. Balaguer Ríos +24
A new measurement of the parity violating asymmetry in elastic electron scattering on hydrogen at backward angles and at a four momentum transfer of Q^2=0.22 (GeV/c)^2 is reported…
Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering
G0 Collaboration, D. S. Armstrong
We have measured the beam-normal single-spin asymmetry in elastic scattering of transversely-polarized 3 GeV electrons from unpolarized protons at Q^2 = 0.15, 0.25 (GeV/c)^2. The r…
Strange Quark Contributions to Parity-Violating Asymmetries in the Forward G0 Electron-Proton Scattering Experiment
The G0 Collaboration
We have measured parity-violating asymmetries in elastic electron-proton scattering over the range of momentum transfers 0.12 < Q^2 < 1.0 GeV^2. These asymmetries, arising from int…