Dermot Moran (Univ Manchester)
We report on studies of exclusive dimuon production, using LHCb experimental data. Exclusively produced muon pairs can be produced by two photon fusion (a QED process ideally suited to obtaining a precise integrated luminosity measure), or by resonance production. We show results for exclusive dimuon production, and observations of the exclusive J/psi. psi‘ and chi_c states, obtained with data at $\sqrt(s) = 7$~TeV. We compare our results to predictions.
Tim Gershon (Univ. of Warwick)