Non-diffractive production of meson resonances

Abstract

We study the peripheral cross sections of resonances that cannot be produced by π-exchange. In particular, we concentrate on the four meson nonets expected as L = 1 quark states (i.e., the J P = 0 + π N(980); J P = 1 + A 1, B; J P = 2 + A 2). We use SU(3), Regge poles, factorization, exchange degeneracy, pole extrapolation, and the vector-meson-photon analogy. We predict the cross sections in both photoproduction and non-diffractive hadronic reactions. In passing, we discuss the large unnatural-parity (B, K−Q B) exchange contributions and even the possibility of studying ππ → πω while avoiding the B production background.