Measurement of the Proton and Deuteron Spin Structure Function g 1 in the Resonance Region

We have measured the proton and deuteron spin structure functions g[sup p][sub 1] and g[sup d][sub 1] in the region of the nucleon resonances for W2 < 5GeV2 and Q2(similar, equals)0.5 and Q2(similar, equals)1.2GeV2 by inelastically scattering 9.7 GeV polarized electrons off polarized 15NH3 and 15...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review letters 1997-02, Vol.78 (5), p.815-819
Hauptverfasser:	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., Chupp, 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., Garvey, D., Gearhart, R., Gomez, J., Grenier, P., Griffioen, K. A., Hoibraten, S., Hughes, E. W., Hyde-Wright, C. E., 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., Maruyama, X. K., 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. A., 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., Wesselmann, F., White, J. L., Witte, K., Young, C. C., Youngman, B., Yuta, H., Zapalac, G., Zihlmann, B., Zimmermann, D.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We have measured the proton and deuteron spin structure functions g[sup p][sub 1] and g[sup d][sub 1] in the region of the nucleon resonances for W2 < 5GeV2 and Q2(similar, equals)0.5 and Q2(similar, equals)1.2GeV2 by inelastically scattering 9.7 GeV polarized electrons off polarized 15NH3 and 15ND3 targets. We observe significant structure in g[sup p][sub 1] in the resonance region. We have used the present results, together with the deep-inelastic data at higher W2, to extract Gamma (Q2)(equivalent)01 g1(x,Q2)dx. This is the first information on the low-Q2 evolution of Gamma toward the Gerasimov-Drell-Hearn limit at Q2 = 0.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.78.815