1996/11/06 by Schuler, Gerhard A.
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.hep-ph/9611249
A Monte Carlo program is presented for the computation of the most general cross section for two-photon production in e+e- collisions at fixed two-photon invariant mass W. Functions implemented for the five gamma* gamma* structure functions include three models of the total hadronic cross section and the lepton-pair production cross section. Prospects of a structure-function determination through a study of the azimuthal dependence between the two scattering planes are outlined. All dependences on the electron mass and the photon virtualities Qi2 are fully kept. Special emphasis is put on a numerically stable evaluation of all variables over the full Qi2 range from Qimin2 ∼ me2 (W/√(s))4 ≪ me2 up to Qimax2 ∼ s. A comparison is made with an existing Monte Carlo program for lepton-pair production and an equivalent-photon approximation for hadronic cross sections.