Photoproduction of dileptons and photons in p-p collisions at Large Hadron Collider energies

Abstract

The production of large $p_T$ dileptons and photons originating from photoproduction processes in p-p collisions at Large Hadron Collider energies is calculated. The comparisons between the exact treatment results and the ones of the equivalent photon approximation approach are expressed as the $Q^2$ (the virtuality of photon) and $p_T$ distributions. The method developed by Martin and Ryskin is used for avoiding double counting when the coherent and incoherent contributions are considered simultaneously. The numerical results indicate that, the equivalent photon approximation is only effective in small $Q^2$ region and can be used for coherent photoproduction processes with proper choice of $Q_{\text{max}}^2$ ( the choices $Q_{\text{max}}^2\sim \hat{s}$ or $\infty$ will cause obvious errors), but can not be used for incoherent photoproduction processes. The exact treatment is needed to deal accurately with the photoproduction of large $p_T$ dileptons and photons.

arXiv comment13 pages, 24 figures

References in corpus (15)

• Big-Bang Nucleosynthesis
• The Physics of Ultraperipheral Collisions at the LHC
• Multiparton Interactions in Photoproduction at HERA
• Improving the Weizsäcker-Williams Approximation in Electron-Proton Collisions
• Pionic Parton Distributions Revisited
• Photon-Photon Physics in Very Peripheral Collisions of Relativistic Heavy Ions
• Radiatively Generated Parton Distributions of Real and Virtual Photons
• The Photon Structure from Deep Inelastic Electron-Photon Scattering
• $\gamma \gamma$ Processes at High Energy pp Colliders
• The photon PDF of the proton
• J/psi Inclusive Production in ep Deep-Inelastic Scattering at DESY HERA
• Survey of present data on photon structure functions and resolved photon processes
• Low-mass lepton pair production at large transverse momentum
• Production of large transverse momentum dileptons and photons in $pp$, $dA$ and $AA$ collisions by photoproduction processes
• Large mass dilepton production from jet-dilepton conversion in the quark-gluon plasma

Cited by in corpus (5)

• Impact parameter dependence of the azimuthal asymmetry in lepton pair production in heavy ion collisions
• Photoproductions of dileptons, photons, and light vector mesons in p-p, p-Pb, and Pb-Pb collisions at Large Hadron Collider energies
• Enhancement of incoherent bremsstrahlung in proton-nucleus scattering in the $\Delta$-resonance energy region
• Validity of equivalent photon spectra and the photoproduction processes in p-p collisions
• Elastic and inelastic $J/\psi$ photoproduction in $p$-$p$ collisions at LHC energies: the feature of Weizsäcker-Williams approximation