Comparison of Nucleon-Nucleon Scattering Data with the Predictions of $\mathrm{SU}{\mathrm{}\left(12\right)\mathrm{}}_{\mathcal{L}}$

The form of the nucleon-nucleon scattering amplitude is determined subject to the restriction that baryon-baryon scattering be invariant under $\mathrm{SU}{\mathrm{}\left(12\right)\mathrm{}}_{\mathcal{L}}$ transformations. The results are found to disagree with experiment. The possibility that $\mathrm{SU}{\mathrm{}\left(12\right)\mathrm{}}_{\mathcal{L}}$ may be a "leading approximation" to a true $S$-matrix theory is discussed briefly.