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 unusual electric charges. Similar to the previous FS models, color-octet leptons and color-sextet quarks, which are expected to have masses much lower than the compositeness scale, are predicted. Observation of these particles could provide first indications of preonic models. The FCC/SppC pp option will give an opportunity to probe mq6mq6m_{q_{6}} up to 48/75 TeV and ml8ml8m_{l_{8}} up to 15/27 TeV within 1 year of operation at nominal luminosity. FCC/SppC based ep and μμ\mu p colliders will essentially enlarge the covered mass region, namely me8me8m_{e_{8}} up to 23/27 TeV and mμ8mμ8m_{\mu _{8}} up to 68/80 TeV.