Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-09-28
Phys.Rev. D65 (2002) 073030
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 5 figs.;improved discussion, figs. and definitions;corrected misprints
Scientific paper
10.1103/PhysRevD.65.073030
We present the exact O(alpha) correction to the process e+ e- -> f f-bar + gamma, f neq e, for ISR oplus FSR at and beyond LEP2 energies. We give explicit formulas for the completely differential cross section. As an important application, we compute the size of the respective sub-leading corrections of O(alpha L) to the f f-bar cross section, where L is the respective big logarithm in the renormalization group sense so that it is identifiable as L = ln |s|/m_e^2 when s is the squared e+e- cms energy. Comparisons are made with the available literature. We show explicitly that our results have the correct infrared limit, as a cross-check. Some comments are made about the implementation of our results in the framework of the Monte Carlo event generator KK MC.
Jadach Stanislaw
Melles Michael
Ward B. F. L.
Yost Sarah Anne
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