The CT-PPS (CMS-TOTEM Precision Proton Spectrometer) detector system consists of tracking and timing stations located along the LHC at CERN, on both sides of the CMS interaction point. Its purpose is to study Central Exclusive Production (CEP) in proton-proton collisions at LHC, where the two protons emerge intact from the interaction, while the energy lost is taken up by additional particles detected by the central CMS detectors. Channels of interest include photon-photon production of \(W\) and \(Z\) boson pairs, high-mass diphoton and dilepton production, high-\(p_{\mathrm{T}}\) jet production, as well as searches for anomalous couplings and new resonances.
Data recorded by CT-PPS in 2016 at nominal LHC luminosity have been used to study dilepton production: on a sample corresponding to about 10 fb\(^{-1}\), central exclusive production of high-mass dilepton pairs has been observed for the first time.