Exclusive photoproduction of lepton pairs at LHC

Abstract

Exclusive photoproduction of dileptons, gamma p ->l+ l- p, will be measured in ultraperipheral collisions at LHC. The mechanism where the lepton pair comes from a heavy timelike photon radiated from a quark interferes with the pure QED process gamma gamma ->l+ l- As an analog of deeply virtual Compton scattering, this timelike Compton scattering is a way to study generalized parton distributions in the nucleon or the nucleus. High energy kinematics will enable to focus on gluon distributions. Nuclear effects may be scrutinized in heavy ion collisions.

to be published in the proceedings of the workshop on photon collisions at the LHC, Nucl Phys B Proc Suppl

References in corpus (2)

• The Physics of Ultraperipheral Collisions at the LHC
• Neutron contribution to nuclear DVCS asymmetries

Cited by in corpus (5)

• NLO corrections to timelike, spacelike and double deeply virtual Compton scattering
• On timelike and spacelike deeply virtual Compton scattering at next to leading order
• Can one measure timelike Compton scattering at LHC ?
• Probing the nucleon's transversity and the photon's distribution amplitude in lepton pair photoproduction
• Leading twist nuclear shadowing, nuclear generalized parton distributions and nuclear DVCS at small x