Operator analysis of proton decay in an SU(7) gut

摘要: Abstract An SU(7) model, with a surviving low-energy SU(4) × SU(3) U(1) gauge symmetry, may reduce the number of effective four-fermion baryon violating interactions from six to two. A simple argument, applicable general SU ( N ), shows that terms allowed by are same as those SU(7).