CMS has a preprint out where they are searching for compositeness in dijet angular distributions.

*The measured dijet angular distributions can be used to set limits on quark compositeness represented by a four-fermion contact interaction term in addition to the QCD Lagrangian.*

They set limits.

I will guess that angular distributions of two lepton events will be in the search of lepton compositeness.

Considering that the compositeness of nuclei and compositeness of nucleons were cleanly found by deep inelastic scattering, I would be very doubtful of interpretations using levels of monte carlo calculations that would give such a drastic conclusion to deviations from QCD.

One would have to wait for lepton colliders . From LHC I would need two leptons at a vertex to get the other end of deep inelastic scattering. There is nothing that can beat form factors, imo.

This post imported from StackExchange Physics at 2014-03-24 04:41 (UCT), posted by SE-user anna v