A model of quark and lepton compositeness

Abstract

In the chiral $SU(15)$ gauge theory presented here, the quarks and leptons are bound states ("prebaryons") of massless preons. The Standard Model charges of the preons imply 3 generations of quarks and leptons, plus some vectorlike fermions lighter than the confining scale ${\Lambda }_{\mathrm{pre}}$. Under certain assumptions about the chiral dynamics, bound states of two prebaryons behave as Higgs fields. The QCD and electroweak groups may unify above ${\Lambda }_{\mathrm{pre}}$, while $SU(15)$ prevents rapid proton decay.

Comments: 12 pages