Key points are not available for this paper at this time.
The effective Lagrangian which gives a full solution of the U (1) problem is obtained from the 1N expansion of quantum chromodynamics. This Lagrangian satisfies all the anomalous n-point Ward identities for arbitrary q^2, and includes chiral and SU (3) breaking. The relationship between the ^' mass and the dependence of the vacuum energy in the absence of quarks and the form of the strong CP violation in the effective-Lagrangian framework are deduced.
Nath et al. (Thu,) studied this question.