Phenomenology of spin observables in the reactions of meson production with the 1 S 0 Diproton pN → {pp} s X

Abstract

Formalism for spin observables for production of pseudoscalar, scalar, and vectormesons in pN collision with formation of the 1S0 diproton {pp}s in the final state is considered in model-independent way assuming parity and angular momentum conservation. Production of the pseudoscalar mesons (Jπ = 0−) is described by two spin amplitudes and both of them can be completely determined by measurement of unpolarized cross section dσ0, vector analyzing power Ay, and spin-correlation coefficients Cx,x = −Cz,z> and Cx,z. Similar result is obtained for production of scalar mesons (Jπ = 0+). It is shown that measurement of the tensor polarization t20 of the vector meson V (Jπ = 1−) in the reaction pN → {pp}sV in collinear kinematics gives the same information as measurement of the spin-correlation coefficients Cz,z or Cy,y.