Published January 8, 2010
| public
Journal Article
Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment
- Creators
- Androić, D.
- Armstrong, D. S.
- Arvieux, J.
- Bailey, S. L.
- Beck, D. H.
- Beise, E. J.
- Benesch, J.
- Benmokhtar, F.
- Bimbot, L.
- Birchall, J.
- Bosted, P.
- Breuer, H.
- Capuano, C. L.
- Chao, Y.-C.
- Coppens, A.
- Davis, C. A.
- Ellis, C.
- Flores, G.
- Franklin, G.
- Furget, C.
- Gaskell, D.
- Gericke, M. T. W.
- Grames, J.
- Guillard, G.
- Hansknecht, J.
- Horn, T.
- Jones, M.
- King, P. M.
- Korsch, W.
- Kox, S.
- Lee, L.
- Liu, J.
- Lung, A.
- Mammei, J.
- Martin, J. W.
- McKeown, R. D.
- Mihovilovic, M.
- Micherdzinska, A.
- Mkrtchyan, H.
- Muether, M.
- Page, S. A.
- Papavassiliou, V.
- Pate, S. F.
- Phillips, S. K.
- Pillot, P.
- Pitt, M. L.
- Poelker, M.
- Quinn, B.
- Ramsay, W. D.
- Real, J.-S.
- Roche, J.
- Roos, P.
- Schaub, J.
- Seva, T.
- Simicevic, N.
- Smith, G. R.
- Spayde, D. T.
- Stutzman, M.
- Suleiman, R.
- Tadevosyan, V.
- van Oers, W. T. H.
- Versteegen, M.
- Voutier, E.
- Vulcan, W.
- Wells, S. P.
- Williamson, S. E.
- Wood, S. A.
- G0 Collaboration
Abstract
We have measured parity-violating asymmetries in elastic electron-proton and quasielastic electron-deuteron scattering at Q^2=0.22 and 0.63 GeV^2. They are sensitive to strange quark contributions to currents in the nucleon and the nucleon axial-vector current. The results indicate strange quark contributions of ≲10% of the charge and magnetic nucleon form factors at these four-momentum transfers. We also present the first measurement of anapole moment effects in the axial-vector current at these four-momentum transfers.
Additional Information
© 2010 American Physical Society. Received 29 September 2009; published 8 January 2010. We gratefully acknowledge the strong technical contributions to this experiment from many groups: Caltech, Illinois, LPSC-Grenoble, IPN-Orsay, TRIUMF, and particularly the Accelerator and Hall C groups at Jefferson Lab. CNRS (France), DOE (U.S.), NSERC (Canada), and NSF (U.S.) supported this work in part.Additional details
- Eprint ID
- 17515
- DOI
- 10.1103/PhysRevLett.104.012001
- Resolver ID
- CaltechAUTHORS:20100218-101354807
- Centre National de la Recherche Scientifique (CNRS)
- Department of Energy (U.S.)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- NSF
- Created
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2010-02-19Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field