Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-03-13
Phys.Rev. D65 (2002) 113003
Physics
High Energy Physics
High Energy Physics - Phenomenology
39 pages, latex, 19 postscript files
Scientific paper
10.1103/PhysRevD.65.113003
The photonic and QCD radiative corrections at next-to-leading order are calculated for fermion-pair production at muon colliders, maintaining the full mass dependence and helicity information of the muons and the produced fermions. Higher-order effects of initial-state radiation are included at the leading logarithmic level. In the calculation particular attention is paid to the issue of gauge invariance in the vicinity of resonances. The most important corrections are presented in analytical form. The detailed numerical discussion concentrates on the corrections to the (s-channel) Higgs-boson resonances in the Standard Model and its minimal supersymmetric extension. The results show that photonic initial- and QCD final-state corrections are very important in a precision study of Higgs resonances, but that (photonic) initial-final interferences are widely suppressed and only modify the non-resonant background.
Dittmaier Stefan
Kaiser Andreas
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