2016/08/29 by McNulty, Ronan
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.1608.08103
Central Exclusive Production (CEP) is a unique process at hadron machines in which particles are produced via colourless propagators. LHCb have measured the cross-sections for the CEP of vector mesons, J/ψ,ψ(2S),Υ(1S),Υ(2S) and Υ(3S), which are photo-produced. In the double pomeron exchange process, preliminary measurements have been made of χc0,χc1, χc2 meson production while the first observations of the CEP of pairs of charmonia, J/ψJ/ψ and J/ψψ(2S), have been made and limits obtained on the pair production of other charmonia.