The Strange Quark Contribution to the Proton’s Magnetic Moment
- Spayde, D.T.
- Averett, T.
- Barkhuff, D.
- Beck, D.H.
- Beise, E.J.
- Breuer, H.
- Carr, R.
- Covrig, S.
- Dodson, G.
- Dow, K.
- Farkhondeh, M.
- Filippone, B.W.
- Franklin, W.
- Hasty, R.
- Ito, T.M.
- Korsch, W.
- Kowalski, S.
- McKeown, R.D.
- Mueller, B.
- Pitt, M.L.
- Ramsey-Musolf, M.J.
- Ritter, J.
- Tieulent, R.
- Tsentalovich, E.
- Wells, S.P.
- Yang, B.
- Zwart, T.
Publication date
March 2004
DOI ISSN
0370-2693 Journal
Physics Letters B Language
English Citation count (estimate)
80Abstract
We report a new determination of the strange quark contribution to the proton’s magnetic form factor at a four-momentum transfer Q2 = 0.1(GeV/c)2 from parity-violating e-p elastic scattering. The result uses a revised analysis of data from the SAMPLE experiment which was carried out at the MIT-Bates Laboratory. The data are combined with a calculation of the proton’s axial form factor GeA to determine the strange form factor GsM (Q2=0.1)=0.37±0.20±0.26±0.07. The extrapolation of GsM to its Q2 = 0 limit and comparison with calculations is also discussed
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