Production and decay rates of excited leptons in a left-right symmetric scenario

Understand

We merge two leading Beyond Standard Model scenarios, namely compositeness and left-right symmetry, and probe the resulting collider signatures in the leptonic case.

• The constraints on composite models for fermions leave open the possibility of vector like excitations of Standard Model (SM) fermions.
• Here we consider the possibility of low scale left-right gauge symmetry $SU(2)_{R} \times SU(2)_{L} \times U(1)_ {B-L}$, with the simplifying assumption that the right like excited sector of fermions is significantly heavier than the excitations of the left chiral fermions.
• It is found that the right handed currents still contribute to observable processes, and alter the existing bounds on the scale of compositeness.