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Measurements of the Proton and Deuteron Spin Structure Function g2 and Asymmetry A2

Authors :
Garvey, D.
Maruyama, X.K.
The E143 Collaboration
Abe, K.
Akagi, T.
Anthony, P.L.
Antonov, R.
Arnold, R.G.
Averett, T.
Band, H.R.
Bauer, J.M.
Borel, H.
Bosted, P.E.
Breton, V.
Button-Shafer, J.
Chen, J.P.
Chump, T.E.
Clendenin, J.
Comptour, C.
Coulter, K.P.
Court, G.
Crabb, D.
Daoudi, M.
Day, D.
Dietrich, F.S.
Dunne, J.
Dutz, H.
Erbacher, R.
Fellbaum, J.
Feltham, A.
Fonvieille, H.
Frlez, E.
Gearhart, R.
Gomez, J.
Grenier, P.
Griffioen, K.A.
Hoibraten, S.
Hughes, E.W.
Hyde-Wright, C.
Johnson, J.R.
Kawall, D.
Klein, A.
Kuhn, S.E.
Kuriki, M.
Lindgren, R.
Liu, T.J.
Lombard-Nelsen, R.M.
Marroncle, J.
Maruyama, T.
McCarthy, J.
Meyer, W.
Meziani, Z.-E.
Minehart, R.
Mitchell, J.
Morgenstern, J.
Petratos, G.G.
Pitthan, R.
Pocanic, D.
Prescott, C.
Prepost, R.
Raines, P.
Raue, B.
Reyna, D.
Rijllart, A.
Roblin, Y.
Rochester, L.S.
Rock, S.E.
Rondon, O.A.
Sick, I.
Smith, L.C.
Smith, T.B.
Spengos, M.
Staley, F.
Steiner, P.
St. Lorant, S.
Stuart, L.M.
Suekane, F.
Szalata, Z.M.
Tang, H.
Terrien, Y.
Usher, T.
Walz, D.
White, J.L.
Witte, K.
Young, C.C.
Youngman, B.
Yuta, H.
Zapalac, G.
Zihlmann, B.
Zimmermann, D.
Garvey, D.
Maruyama, X.K.
The E143 Collaboration
Abe, K.
Akagi, T.
Anthony, P.L.
Antonov, R.
Arnold, R.G.
Averett, T.
Band, H.R.
Bauer, J.M.
Borel, H.
Bosted, P.E.
Breton, V.
Button-Shafer, J.
Chen, J.P.
Chump, T.E.
Clendenin, J.
Comptour, C.
Coulter, K.P.
Court, G.
Crabb, D.
Daoudi, M.
Day, D.
Dietrich, F.S.
Dunne, J.
Dutz, H.
Erbacher, R.
Fellbaum, J.
Feltham, A.
Fonvieille, H.
Frlez, E.
Gearhart, R.
Gomez, J.
Grenier, P.
Griffioen, K.A.
Hoibraten, S.
Hughes, E.W.
Hyde-Wright, C.
Johnson, J.R.
Kawall, D.
Klein, A.
Kuhn, S.E.
Kuriki, M.
Lindgren, R.
Liu, T.J.
Lombard-Nelsen, R.M.
Marroncle, J.
Maruyama, T.
McCarthy, J.
Meyer, W.
Meziani, Z.-E.
Minehart, R.
Mitchell, J.
Morgenstern, J.
Petratos, G.G.
Pitthan, R.
Pocanic, D.
Prescott, C.
Prepost, R.
Raines, P.
Raue, B.
Reyna, D.
Rijllart, A.
Roblin, Y.
Rochester, L.S.
Rock, S.E.
Rondon, O.A.
Sick, I.
Smith, L.C.
Smith, T.B.
Spengos, M.
Staley, F.
Steiner, P.
St. Lorant, S.
Stuart, L.M.
Suekane, F.
Szalata, Z.M.
Tang, H.
Terrien, Y.
Usher, T.
Walz, D.
White, J.L.
Witte, K.
Young, C.C.
Youngman, B.
Yuta, H.
Zapalac, G.
Zihlmann, B.
Zimmermann, D.
Publication Year :
1995

Abstract

We have measured proton and deuteron virtual photon-nucleon asymmetries Ap2 and Ad2 and structure functions gp2 and gd2 over the range 0.03<x<0.8 and 1.3<Q2<10(GeV/c)2 by inelastically scattering polarized electrons off polarized ammonia targets. Results for A2 are significantly smaller than the positivity limit R‾‾√ for both targets. Within experimental precision the g2 data are well described by the twist-2 contribution, gWW2. Twist-3 matrix elements have been extracted and are compared to theoretical predictions.

Details

Database :
OAIster
Publication Type :
Electronic Resource
Accession number :
edsoai.ocn981471372
Document Type :
Electronic Resource

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