We formulate a gauge model for basic interactions based on the symmetry group $G=G_{\mathrm{wk}}\times G_c$, where $G_c$ is the chiral symmetry group ${\left[\mathrm{SU}\mathrm{}\right(3)\mathrm{}\times \mathrm{SU}\mathrm{}(3\left)\right]}_c$ in color space. $G_{\mathrm{wk}}$ is taken to be the left-right-symmetric model $\mathrm{S}{\mathrm{U}}_L\mathrm{}\left(2\right)\mathrm{}\times \mathrm{S}{\mathrm{U}}_R\mathrm{}\left(2\right)\mathrm{}\times \mathrm{U}\mathrm{}\left(1\right)\mathrm{}$. The chiral color symmetry is spontaneously broken in such a way that quarks acquire a common mass and an octet of axial-vector gluons become massive but an octet of vector gluons remain massless. In this way quark mass arises from spontaneous color-chiral-symmetry breaking. The experimental consequences of the left-right-symmetric model are discussed and it is shown that one version of this model gives results similar to the Salam-Weinberg model for the currently available energies. There is also another version, where the results are again similar to the Salam-Weinberg model except that the $y$ dependence for the asymmetry parameter for the deep-inelastic scattering of polarized electrons is completely different although its value at $y=0.21\mathrm{}$ is compatible with experiment.

Close

PrevNext

View figure in article