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20 papers · 2 filters
Quasi-free photoproduction of eta-mesons off 3He nuclei
L. Witthauer, D. Werthmueller, I. Keshelashvili +70
Quasi-free photoproduction of -mesons has been measured off nucleons bound in He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment…
Early Results from the Qweak Experiment
D. Androic, D. S. Armstrong, A. Asaturyan +94
A subset of results from the recently completed Jefferson Lab Qweak experiment are reported. This experiment, sensitive to physics beyond the Standard Model, exploits the small par…
A narrow structure in the excitation function of eta-photoproduction off the neutron
D. Werthmueller, L. Witthauer, I. Keshelashvili +69
The photoproduction of -mesons off nucleons bound in H and He has been measured in coincidence with recoil protons and recoil neutrons for incident photon energies from…
Neutron skin of Pb from Coherent Pion Photoproduction
C. M. Tarbert, D. P. Watts, D. I. Glazier +57
Information on the size and shape of the neutron skin on Pb has been extracted from coherent pion photoproduction cross sections measured using the Crystal Ball together wi…
Measurement of the (, ) reaction using a novel nucleon spin polarimeter
D. P. Watts, D. I. Glazier, P. Aguar-Bartolomé +74
We report the first large-acceptance measurement of polarization transfer from a polarized photon beam to a recoiling nucleon, pioneering a novel polarimetry technique with wide ap…
Beam asymmetry for pi+ and pi0 photoproduction on the proton for photon energies from 1.102 to 1.862 GeV
M. Dugger, B. G. Ritchie, P. Collins +5
Beam asymmetries for the reactions gamma p -> p pi0 and gamma p -> n pi+ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged, linearly polarized pho…