Exclusive diffractive photoproduction of dileptons by timelike Compton scattering

Abstract

We derive the forward photoproduction amplitude for the diffractive $\gamma p\to l^{+}{l}^{-}p$ reaction in the momentum space. within the formalism of $k_{\perp }$- factorization. Predictions for the $\gamma p\to l^{+}{l}^{-}p$ reaction are given using unintegrated gluon distribution from the literature. We calculate the total cross section as a function of photon-proton center of mass energy and the invariant mass distribution of the lepton pair. We also discuss whether the production of timelike virtual photons can be approximated by continuing to the spacelike domain $q^2<0$. The present calculation provides an input for future predictions for exclusive hadroproduction in the $pp\to p{l}^{+}{l}^{-}p$ reaction.

11 pages, 7 figures

References in corpus (8)

• Exclusive photoproduction of $J/\psi$ in proton-proton and proton-antiproton scattering
• Exclusive photoproduction at the Tevatron and LHC within the dipole picture
• Exclusive photoproduction of Upsilon: from HERA to Tevatron
• Can one measure timelike Compton scattering at LHC ?
• Luminosity Measurement Method for LHC: The theoretical precision and the experimental challenges
• Investigating the exclusive protoproduction of dileptons at high energies
• Production of Z^0 bosons with rapidity gaps: exclusive photoproduction in gamma p and p p collisions and inclusive double diffractive Z^0's
• Diffractive photoproduction of Z^0 bosons in coherent interactions at CERN-LHC

Cited by in corpus (11)

• On timelike and spacelike hard exclusive reactions
• Two-photon dilepton production in proton-proton collisions: two alternative approaches
• Lepton-pair production in ultraperipheral collisions at AFTER@LHC
• Inclusive and exclusive diffractive production of dilepton pairs in proton-proton collisions at high energies
• Exclusive dilepton production via timelike Compton scattering in heavy ion collisions
• Exclusive and diffractive ${\mu }^{+}{\mu }^{-}$ production in $pp$ collisions at the LHC
• Timelike Compton scattering in ultraperipheral $pPb$ collisions
• Dilepton production through timelike Compton scattering within the $k_T$-factorization approach
• Inclusive and exclusive dilepton photoproduction at high energies
• Exclusive $Z^0$ production in $ep$ and $eA$ collisions at high energies
• Probing Saturation Physics in the Real Compton Scattering at Ultraperipheral $pPb$ Collisions