On momentum dependence of the reaction $π^- p \to ωn$ near threshold

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202911We discuss the near-threshold behavior of the $ω$ production amplitude in the reaction $π^-p \to ωn$. In contrast to the results of earlier analyses we find that the averaged squared matrix element of the production amplitude must be a decreasing function of energy in order to describe the existing experimental data.9 pages, 2 figures, several editorial changes, the treatment of small final momenta is improved, final conclusion unchanged. Submitted to Eur. Phys. J. ANuclear TheoryOn momentum dependence of the reaction $π^- p \to ωn$ near thresholdtext