A minimal fermion-scalar preonic model

Abstract

A minimal fermion-scalar preonic model containing two fermionic preons and one scalar preon is proposed.This scheme allows prevention of the occurrence of undesired SM-level particles, namely leptons and quarks with unusualelectric charges. Similar to the previous FS models, color-octet leptons and color-sextet quarks, which are expected tohave masses much lower than the compositeness scale, are predicted. Observation of these particles could provide firstindications of preonic models. The FCC/SppC pp option will give an opportunity to probe $m_{q6}$ up to 48/75 TeV and$m_{l8}$ up to 15/27 TeV within 1 year of operation at nominal luminosity. FCC/SppC based ep and µp colliders willessentially enlarge the covered mass region, namely me8 up to 23/27 TeV and $m_{µ8}$ up to 68/80 TeV.