Investigating the exclusive protoproduction of dileptons at high energies

Abstract

Using the high energy color dipole approach, we study the exclusive photoproduction of lepton pairs. We use simple models for the elementary dipole-hadron scattering amplitude that captures main features of the dependence on atomic number A, on energy and on momentum transfer t. This investigation is complementary to conventional partonic description of timelike Compton scattering, which considers quark handbag diagrams at leading order in ${\alpha }_s$ and simple models of the relevant generalized parton distributions (GPDs). These calculations are input in electromagnetic interactions in pp and AA collisions to measured at the LHC.

6 pages, 4 figures

References in corpus (4)

• The Physics of Ultraperipheral Collisions at the LHC
• Exclusive vector meson production at HERA from QCD with saturation
• Exclusive photoproduction at the Tevatron and LHC within the dipole picture
• Further success of the colour dipole model

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• Exclusive dilepton production via timelike Compton scattering in heavy ion collisions
• DDVCS on nucleons and nuclei
• Dilepton production through timelike Compton scattering within the $k_T$-factorization approach
• Probing Saturation Physics in the Real Compton Scattering at Ultraperipheral $pPb$ Collisions