Abstract
The reactions pseudoscalar+nucleon→axial+nucleon and pseudoscalar+nucleon→axial+3/2+-resonance, are discussed. The general Regge-pole formalism is first developed in detail. It is subsequently specialized in the following steps: i) production near the forward direction, ii) validity ofSU3 (with breakings for meson mixings); iii) validity of exchange degeneracy. Two nonets of produced axial mesons are considered: theA-nonet (JPC=1++) and theB-nonet (JPC=1+−) and the effects of the possibleA-B mixings are examined. The most specific model, assumingSU3 and exchange degeneracy, gives rise to a large number of restrictions (mostly inequalities) among cross-sections which should be testable. The value ofD/F for the couplings of theR-trajectories to nucleons is a relevant unknown parameter; we calculate its value in the kinetic supermultiplet model for a possible indication. The problem of KA-KB interference is discussed and the implied shape of the K* mass spectra is examined.
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