Abstract
We investigate the potentialities offered by the study of lepton-pair production in ultraperipheral collisions at a fixed-target experiment using the proton and ion LHC beams. In these collisions, exclusive or semi-exclusive lepton-pair production can be used as luminosity monitor as well as a check of the equivalent-photon approximation, via the measurement of the Bethe-Heitler cross section. It can also serve as a probe of the inner hadron structure via the measurement of the lepton-pair azimuthal asymmetry which is sensitive to the timelike virtual Compton scattering. We also briefly discuss the possibility offered by the study of η c production. Finally, we outline the possibilities for lepton-pair production by Odderon-Pomeron fusion in exclusive pp collisions.
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Lansberg, J.P., Szymanowski, L. & Wagner, J. Lepton-pair production in ultraperipheral collisions at AFTER@LHC. J. High Energ. Phys. 2015, 87 (2015). https://doi.org/10.1007/JHEP09(2015)087
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DOI: https://doi.org/10.1007/JHEP09(2015)087