Title of article :
A model of F2γ at arbitrary Q2 and the total photon–photon cross-sections at high energies
Author/Authors :
Badelek، نويسنده , , B. and Krawczyk، نويسنده , , M. and Kwieci?ski، نويسنده , , J. and Sta?to، نويسنده , , A.M.، نويسنده ,
Abstract :
A model of the real photon structure function F2γ which can be used in the low Q2, low x region is formulated. It includes both the VMD and the QCD components, the latter based on arbitrary parton distributions in the photon and suitably extrapolated to the low Q2 region. The model using the GRV and GRS’ parton densities describes reasonably well the existing high energy data on F2γ, σγγ and the low Q2 data on σγ∗γ. Predictions for high energy cross-section for γγ scattering and γ∗γ relevant to future Photon Colliders are given.
Keywords :
Photon structure , structure function , Gamma–gamma cross sections
Journal title :
Astroparticle Physics
