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Lepton-pair production in ultraperipheral collisions at AFTER@LHC

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 eta(c) production. Finally, we outline the possibilities for lepton-pair production by Pomeron-Odderon fusion in exclusive pp and pA collisions.
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http://hal.in2p3.fr/in2p3-01157187
Contributor : Sophie Heurteau <>
Submitted on : Wednesday, May 27, 2015 - 5:22:10 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:49 PM

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J. P. Lansberg, L. Szymanowski, J. Wagner. Lepton-pair production in ultraperipheral collisions at AFTER@LHC. Journal of High Energy Physics, Springer Verlag (Germany), 2015, 2015 (9), pp.087. ⟨10.1007/JHEP09(2015)087⟩. ⟨in2p3-01157187⟩

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