Hamilton, D.J. et al. (2005) Polarization transfer in proton Compton scattering at high momentum transfer. Physical Review Letters, 94(24), p. 242001. (doi: 10.1103/PhysRevLett.94.242001)
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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.94.242001
Abstract
Compton scattering from the proton was investigated at s=6.9 GeV<sup>2</sup> and t=-4.0 GeV<sup>2</sup> via polarization transfer from circularly polarized incident photons. The longitudinal and transverse components of the recoil proton polarization were measured. The results are in disagreement with a prediction of perturbative QCD based on a two-gluon exchange mechanism, but agree well with a prediction based on a reaction mechanism in which the photon interacts with a single quark carrying the spin of the proton.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Annand, Dr John and Hamilton, Dr David |
Authors: | Hamilton, D.J., Mamyan, V.H., Aniol, K.A., Annand, J.R.M., Bertin, P.Y., Bimbot, L., Bosted, P., Calarco, J.R., Camsonne, A., Chang, G.C., Chang, T.H., Chen, J.P., Choi, S., Chudakov, E., Danagoulian, A., Degtyarenko, P., de Jager, C.W., Deur, A., Dutta, D., Egiyan, K., Gao, H., Garibaldi, F., Gayou, O., Gilman, R., Glamazdin, A., Glashausser, C., Gomez, J., Hansen, J.O., Hayes, D., Higinbotham, D., Hinton, W., Horn, T., Howell, C., Hunyady, T., Hyde-Wright, C.E., Jiang, X., Jones, M.K., Khandaker, M., Ketikyan, A., Kubarovsky, V., Kramer, K., Kumbartzki, G., Laveissiere, G., LeRose, J., Lindgren, R.A., Margaziotis, D.J., Markowitz, P., McCormick, K., Meziani, Z.E., Michaels, R., Moussiegt, P., Nanda, S., Nathan, A.M., Nikolenko, D.M., Nelyubin, V., Norum, B.E., Paschke, K., Pentchev, L., Perdrisat, C.F., Piasetzky, E., Pomatsalyuk, R., Punjabi, V.A., Rachek, I., Radyushkin, A., Reitz, B., Roche, R., Roedelbronn, M., Ron, G., Sabatie, F., Saha, A., Savvinov, N., Shahinyan, A., Shestakov, Y., Sirca, S., Slifer, K., Solvignon, P., Stoler, P., Tajima, S., Sulkosky, V., Todor, L., Vlahovic, B., Weinstein, L.B., Wang, K., Wojtsekhowski, B., Voskanyan, H., Xiang, H., Zheng, X., and Zhu, L. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review Letters |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
ISSN (Online): | 1079-7114 |
Published Online: | 24 June 2005 |
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