4 papers
Differential Equations for the 2-Loop Equal Mass Sunrise
E. Remiddi
The differential equations for the 2-loop sunrise graph, at equal masses but arbitrary momentum transfer, are used for the analytic evaluation of the coefficients of its Laurent-ex…
Progress on two-loop non-propagator integrals
T. Gehrmann, E. Remiddi
At variance with fully inclusive quantities, which have been computed already at the two- or three-loop level, most exclusive observables are still known only at one loop, as furth…
Master Equations for Master Amplitudes
M. Caffo, H. Czyz, S. Laporta +1
The general lines of the derivation and the main properties of the master equations for the master amplitudes associated to a given Feynman graph are recalled. Some results for the…
Event Generators for Bhabha Scattering
S. Jadach, O. Nicrosini, H. Anlauf +21
The results obtained by the "Event Generators for Bhabha Scattering" working group during the CERN Workshop "Physics at LEP2" (1994/1995) are presented.