Can one measure timelike Compton scattering at LHC ?

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dc.creatorPire, B.
dc.creatorSzymanowski, L.
dc.creatorWagner, J.
dc.date2008-11-03
dc.date.accessioned2026-07-07T12:31:52Z
dc.date.available2026-07-07T12:31:52Z
dc.descriptionExclusive photoproduction of dileptons, gamma N->e+e-N, is and will be measured in ultraperipheral collisions at hadron colliders, such as the Tevatron, RHIC and the LHC . We demonstrate that the timelike deeply virtual Compton scattering (TCS) mechanism gamma q -> e+e- q where the lepton pair comes from the subprocess gamma q -> gamma* q dominates in some accessible kinematical regions, thus opening a new way to study generalized parton distributions (GPD) in the nucleon. High energy kinematics enables to probe parton distributions at small skewedness. This subprocess interferes at the amplitude level with the pure QED subprocess gamma gamma* -> e+e- where the virtual photon is radiated from the nucleon.
dc.description9 pages, 10 figures
dc.identifierhttps://arxiv.org/abs/0811.0321
dc.identifierhttp://arxiv.org/abs/0811.0321
dc.identifierPhys.Rev.D79:014010,2009
dc.identifierdoi:10.1103/PhysRevD.79.014010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216595
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleCan one measure timelike Compton scattering at LHC ?
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