Prediction of the one pion exchange contribution to the processπ − p→π − pω with the help of the Veneziano model

Abstract

The one pion exchange contribution to the differentialπ−p→π−pω cross-section is calculated assuming that theπ→πω amplitude associated with one of the vertices is described by the Veneziano formula, and that only a trivial dependence of the latter on the mass of the exchanged pion needs to be taken into account. The remaining unknown overall constant is then fixed by considering the decayω→3π. A rough comparison with preliminary data from a 16 GeV/cπ−p experiment shows that the one pion exchange model could possibly describe the reactionπ−p→π−pω forπω masses above 1.4 GeV.