Details

Autor(en) / Beteiligte

• Acha, A.
• Aniol, K. A.
• Armstrong, D. S.
• Arrington, J.
• Averett, T.
• Bailey, S. L.
• Barber, J.
• Beck, A.
• Benaoum, H.
• Benesch, J.
• Bertin, P. Y.
• Bosted, P.
• Butaru, F.
• Burtin, E.
• Cates, G. D.
• Chao, Y.-C.
• Chen, J.-P.
• Chudakov, E.
• Cisbani, E.
• Craver, B.
• Cusanno, F.
• De Leo, R.
• Decowski, P.
• Deur, A.
• Feuerbach, R. J.
• Finn, J. M.
• Frullani, S.
• Fuchs, S. A.
• Fuoti, K.
• Gilman, R.
• Glesener, L. E.
• Grimm, K.
• Grames, J. M.
• Hansen, J. O.
• Hansknecht, J.
• Higinbotham, D. W.
• Holmes, R.
• Holmstrom, T.
• Ibrahim, H.
• de Jager, C. W.
• Jiang, X.
• Katich, J.
• Kaufman, L. J.
• Kelleher, A.
• King, P. M.
• Kolarkar, A.
• Kowalski, S.
• Kuchina, E.
• Kumar, K. S.
• Lagamba, L.
• LaViolette, P.
• LeRose, J.
• Lindgren, R. A.
• Lhuillier, D.
• Liyanage, N.
• Margaziotis, D. J.
• Markowitz, P.
• Meekins, D. G.
• Meziani, Z.-E.
• Michaels, R.
• Moffit, B.
• Nanda, S.
• Nelyubin, V.
• Otis, K.
• Paschke, K. D.
• Phillips, S. K.
• Poelker, M.
• Pomatsalyuk, R.
• Potokar, M.
• Prok, Y.
• Puckett, A.
• Qian, X.
• Qiang, Y.
• Reitz, B.
• Roche, J.
• Saha, A.
• Sawatzky, B.
• Singh, J.
• Slifer, K.
• Sirca, S.
• Snyder, R.
• Solvignon, P.
• Souder, P. A.
• Stutzman, M. L.
• Subedi, R.
• Suleiman, R.
• Sulkosky, V.
• Tobias, W. A.
• Ulmer, P. E.
• Urciuoli, G. M.
• Wang, K.
• Whitbeck, A.
• Wilson, R.
• Wojtsekhowski, B.
• Yao, H.
• Ye, Y.
• Zhan, X.
• Zheng, X.
• Zhou, S.
• Ziskin, V.

Titel

Precision Measurements of the Nucleon Strange Form Factors at Q 2 ∼ 0.1     GeV 2

Ist Teil von

• Physical review letters, 2007-01, Vol.98 (3), Article 032301

Ort / Verlag

American Physical Society

Erscheinungsjahr

2007

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• We report new measurements of the parity-violating asymmetry A_PV in elastic scattering of 3 GeV electrons off hydrogen and 4He targets with ~6.0 degrees. The 4He result is A_PV = (+6.40 +/- 0.23 (stat) +/- 0.12 (syst)) x10^-6. The hydrogen result is A_PV = (-1.58 +/- 0.12 (stat) +/- 0.04 (syst)) x10^-6. These results significantly improve constraints on the electric and magnetic strange form factors G_E^s and G_M^s. We extract G_E^s = 0.002 +/- 0.014 +/- 0.007 at = 0.077 GeV^2, and G_E^s + 0.09 G_M^s = 0.007 +/- 0.011 +/- 0.006 at = 0.109 GeV^2, providing new limits on the role of strange quarks in the nucleon charge and magnetization distributions.