Abstract
An extended version of the Monte Carlo program GALUGA is presented for the computation of two-photon production in e +e − collisions. Functions implemented for the five γ * γ * structure functions now include several ansätze of the total hadronic cross section based on the BFKL Pomeron and various Regge-like models. In addition, structure functions for resonance formation are included with full dependence on the two-photon virtualities Q 1 2 and Q 2 2 as given in the constituentquark model. The six lowest-lying resonances of each of the C-even mesons with J P = O −, O +, 1 +, 2 + and 2 − are provided. The program can also be used to calculate with exact kinematics the effective two-photon luminosity function. Special emphasis is put on a numerically stable evaluation of all variables over the full Q 1 2 range while keeping all dependences on the electron mass and Q 1 2.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
