The global $B-L$ symmetry in the flavor-unified $\mathrm{SU}(N)$ theories

Ning Chen, Ying-nan Mao, Zhaolong Teng

We study the origin of the global $B-L$ symmetry in a class of flavor-unified theories with gauge groups of $\mathrm{SU}(N\ge 6)$. In particular, we focus on the $\mathrm{SU}(8)$ theory…