6 papers
Neutron polarisation transfer, , in photoproduction off the proton
M. Bashkanov, D. P. Watts, S. J. D. Kay +63
We report a first measurement of the double-polarisation observable, , in photoproduction off the proton. The double-polarisation observable represents the t…
Cross Section for measured at Mainz/A2
W. J. Briscoe, M. Hadzimehmedovi, A. E. Kudryavtsev +89
The differential cross section evaluated for 27 energy bins span the photon-energy range 290-813 MeV (W = 1.195-1.553 GeV) and the pion c.m. polar production angles,…
Measurement of the beam-helicity asymmetry in photoproduction of pairs on carbon, aluminum, and lead
V. Sokhoyan, S. Prakhov, A. Fix +88
The beam-helicity asymmetry was measured, for the first time, in photoproduction of pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The result…
Photoproduction of {\boldmath{}} Mesons off Protons and Neutrons in the Second and Third Nucleon Resonance Region
M. Dieterle, D. Werthmüller, S. Abt +81
Photoproduction of mesons off quasi-free nucleons bound in the deuteron allows to study the electromagnetic excitation spectrum of the neutron and the isospin structure of the exci…
High-statistics measurement of the eta->3pi^0 decay at the Mainz Microtron
S. Prakhov, S. Abt, P. Achenbach +85
The largest, at the moment, statistics of 7x10^6 eta->3pi^0 decays, based on 6.2x10^7 eta mesons produced in the gamma p -> eta p reaction, has been accumulated by the A2 Collabora…
Measurement of the running of the fine structure constant below 1 GeV with the KLOE detector
V. De Leo
The precision measurement of the cross section with the photon emitted in the initial state with the KLOE detector has been used to meas…