and dimuons (μμ) in 110 pb− 1 of data collected with the Collider Detector at Fermilab. The
data are consistent with standard model predictions. The mass spectrum, being a probe for
new physics, is examined for new interactions of quarks and leptons from a common
composite structure. Assuming a contact interaction with the conventional coupling g 0 2/4
π= 1, limits on chiral quark-electron and quark-muon compositeness scales in the range of …