Phys. Rev. Lett. 46, 167 - 170 (1981)Evidence for a Dibaryon Signal in the Measurement of Elastic π+-dpol Scattering |
J. Bolger, E. Boschitz, G. Pröbstle, and G. R. Smith
Institut für Kernphysik des Kernforschungszentrums und Institut für Experimentelle Kernphysik der Universität, D-7500 Karlsruhe, Federal Republic of Germany
S. Mango
Schweizerisches Institut für Nuklearforschung, CH-5234 Villigen, Switzerland
F. Vogler
Physikalisches Institut, Universität Erlangen-Nürnberg, D-8520 Erlangen, Federal Republic of Germany
R. R. Johnson
Physics Department, University of British Columbia, Vancouver, British Columbia V6T 1W5, Canada
J. Arvieux
Laboratoire National Saturne, F-91190 Gif-sur-Yvette, France, and Institut des Sciences Nucléaires, F-38026 Grenoble, France
Received 28 October 1980
The vector analyzing power (iT11) in elastic π-dpol scattering has been measured for several angles at Tπ=142 and 256 MeV. The results are compared with calculations reported in the literature. At the lower energies, Faddeev calculations agree fairly well with the data. At the higher energies, the experimental results differ markedly from any conventional calculation, but agree surprisingly well with predictions in which effects of dibaryon resonances are explicitly included.
©1981 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v46/p167
DOI: 10.1103/PhysRevLett.46.167
PACS: 25.80.+f, 25.10.+s, 21.30.+y, 13.75.Cs
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