A $U(1{)}_{(B-L{)}_3}$ model for dark matter and the $B^{+}\to K^{+}\nu \bar{\nu }$ excess reported by Belle II

MohammadAli Abri, Yasaman Farzan

We explore the $U(1{)}_{(B-L{)}_3}$ gauge symmetry under which only third generation fermions are charged. The cancelation of the $[U(1{)}_{(B-L{)}_3}{]}^3$ anomaly requires a chiral fermion…