Probing the Parton Densities of Virtual Photons at ep Colliders

Abstract

The feasibility of an experimental determination of the parton distributions of virtual photons at high energy $ep$ colliders is studied in the context of the DESY-HERA collider. Recently proposed parton densities of virtual photons are utilized to evaluate the appropriate production processes and their relevant kinematical regions. It is demonstrated that high $E_T$ jet production with $E_T\simeq 5-7\mathrm{GeV}$ and $b\bar{b}$ production can probe the parton distributions of virtual photons up to virtualities of a few ${\mathrm{GeV}}^2$. A useful leading order parametrization of our proposed photonic parton densities, suitable for further studies of these issues, is presented.

23 pages, LaTeX, 6 figures, uses amssymb and epsfig styles

References in corpus (2)

• Parton Distributions of the Virtual Photon
• Photoproduction of $D^{\ast \pm }$ Mesons in $ep$ Collisions at HERA

Cited by in corpus (32)

• HERA Collider Physics
• Theory of hard photoproduction
• Radiatively Generated Parton Distributions of Real and Virtual Photons
• Measurement of D* Meson Cross Sections at HERA and Determination of the Gluon Density in the Proton using NLO QCD
• The Hadronic Final State at HERA
• Survey of present data on photon structure functions and resolved photon processes
• JetViP 1.1: Calculating One- and Two-Jet Cross Sections with Virtual Photons in NLO QCD
• Single-Inclusive Production of Hadrons and Jets in Lepton-Nucleon Scattering at NLO
• JetViP 2.1: the hbook version
• Measurement of the Photon Structure Function F_2^gamma at Low x
• Low-mass lepton pair production at large transverse momentum
• Spin Structure Function of the Virtual Photon Beyond the Leading Order in QCD
• Low Q^2 Jet Production at HERA and Virtual Photon Structure
• Measurement of the Photon Structure Function at High Q^2 at LEP
• The Q^2 Dependence of Dijet Cross Sections in gamma p Interactions at HERA
• Has the QCD RG-Improved Parton Content of Virtual Photons been Observed?
• Electroproduction Cross Section of Large_Et Hadrons at NLO and Virtual Photon Structure Function
• The dependence of dijet production on photon virtuality in ep collisions at HERA
• The Virtual Photon Structure to the Next-to-next-to-leading Order in QCD
• Polarized Virtual Photon Structure Function $g_2^{\gamma }$ and Twist-3 Effects in QCD
• Longitudinally Polarized Photoproduction of Heavy Flavors at Next-to-Leading Order of QCD
• Target Mass Corrections for the Virtual Photon Structure Functions to the Next-to-next-to-leading Order in QCD
• Open Beauty Production
• Interpreting virtual photon interactions in terms of parton distribution functions
• Heavy quark effects on parton distribution functions in the unpolarized virtual photon up to the next-to-leading order in QCD
• Probing the parton densities of virtual photons with the reaction gamma^*gamma->jets at LEP
• Resummation of large logarithms in the heavy quark effects on the parton distributions inside the virtual photon
• Parton distributions in the virtual photon target up to NNLO in QCD
• Jet Cross Sections at HERA - Current Issues
• Squark Contributions to Photon Structure Functions and Positivity Constraints
• Photon Structure Function in Supersymmetric QCD Revisited
• Photon Structure and Quantum Fluctuation