Pospischil, T.H. et al. (2001) Measurement of the recoil polarization in the p(e, e'p)π0 reaction at the Δ(1232) resonance. Physical Review Letters, 86(14), 2959 -2962. (doi: 10.1103/PhysRevLett.86.2959)
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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.86.2959
Abstract
The recoil proton polarization in the reaction P(e, e<sup>l</sup>p)φ<sup>0</sup> at the energy of the [Triangle Open] (1232) resonance was measured. Because of the spin precession in the magnetic spectrometer all three polarization components P<sub>x</sub>, P<sub>y</sub>, and P<sub>z</sub> were simultaneously accessible. From P<sub>x</sub> the Coulomb quadrupole to magnetic dipole ratio was determined in the framework of the Mainz Unitary Isobar Model as colossal magnetoresistance (CMR)(Q<sup>2</sup> = 0.121 GeV) = (-6.4 ± 0.7<sub>stat</sub> ± 0.8<sub>syst</sub>)%, which is in good agreement with the result obtained from the polarization ratio P<sub>x</sub>/P<sub>z</sub>.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Rosner, Professor Guenther |
Authors: | Pospischil, T.H., Bartsch, P., Baumann, D., Bermuth, J., Bohm, R., Bohinc, K., Derber, S., Ding, M., Distler, M., Drechsel, D., Elsner, D., Ewald, I., Friedrich, J., Friedrich, J.M., Geiges, R., Hedicke, S., Jennewein, P., Kahrau, M., Kamalov, S.S., Klein, F., Krygier, K.W., Lac, J., Liesenfeld, A., McIntyre, J., Merkel, H., Merle, P., Muller, U., Neuhausen, R., Potokar, M., Ransome, R.D., Rohe, D., Rosner, G., Schmieden, H., Seimetz, M., Sirca, S., Sick, I., Sule, A., Tiator, L., Wagner, A., Walcher, T., Warren, G.A., and Weis, M. |
Subjects: | Q Science > QC Physics |
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 |
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