Search for Dibaryon Signals by the Measurement of the Tensor Polarization <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>t</mi></mrow><mrow><mn>20</mn></mrow></msub></mrow></math></span> in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>π</mi><mo>−</mo><mrow><msub><mrow><mi>d</mi></mrow><mrow><mi mathvariant="normal">pol</mi></mrow></msub></mrow></math></span> Scattering

J. Ulbricht; V. König; W. Grüebler; P. A. Schmelzbach; B. Jenny; F. Sperisen; K. Elsener; C. Schweizer; A. Chisholm

doi:10.1103/PhysRevLett.48.311

Search for Dibaryon Signals by the Measurement of the Tensor Polarization $t_{20}$ in $π - d_{pol}$ Scattering

J. Ulbricht, V. König, W. Grüebler, P. A. Schmelzbach, B. Jenny, F. Sperisen, K. Elsener, C. Schweizer, and A. Chisholm

Phys. Rev. Lett. 48, 311 – Published 1 February 1982

Abstract

The angular distribution of the tensor polarization $t_{20}$ in $π - d_{pol}$ elastic scattering has been measured in the backward angular region at an incident pion energy of 138 MeV. Large oscillations have been found which are in disagreement with all theoretical calculations even when effects of the presently suggested dibaryon resonances with the assumed standard parameters are explicitly included.