Vector analyzing power iT11 in the π+d→pp reaction in the energy region Tπ=350–450 MeV

The vector analyzing power iT11 of the reaction T(pi) --> pp was measured at T(pi) = 350, 400, and 450 MeV. The results obtained at T(pi) = 350 MeV are in agreement with earlier measurements of iT11 at 325 MeV. With increasing energies our results show a marked increase in the vector analyzing power up to a value close to its theoretical limit at T(pi) = 450 MeV (square-root s = 2.40 GeV). In this energy region broad structure has been found in earlier measurements of dsigma/dOMEGA and A(y0).