t20inπ+dElastic Scattering between 118 and 148 MeV

Abstract

The tensor polarization $t_{20}$ in ${\pi }^{+}d$ elastic scattering has been measured as a function of energy at 15° (laboratory) over the energy range $T_{\pi }=118\mathrm{} \mathrm{to} 148$ MeV. The angular distributions at 135 and 142 MeV between 15° and 35° were also measured. The $t_{20}$ values are negative for all energies and angles investigated and are consistent with the data of Holt et al. and Ungricht et al., resolving the previous discrepancy with the results of Ulbricht et al., Grüebler et al., and Konig et al. As there are no significant rapid variations in $t_{20}$, our data do not lend support to the existence of dibaryon resonance effects at these kinematic ranges.