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QCD corrections to final state photon bremsstrahlung in e+e− annihilation

1991; Elsevier BV; Volume: 269; Issue: 3-4 Linguagem: Inglês

10.1016/0370-2693(91)90191-r

1873-2445

G. Krämer, Bodo Lampe,

Quantum Chromodynamics and Particle Interactions

We calculate the partial widths of the decay Z into one photon plus n jets (n = 1, 2, 3) as a function of the invariant mass cut parameter y = mij2mz2 where mij is the minimum jet invariant mass. Our calculation uses fixed order QCD perturbation theory up to O(αs). Results in two schemes for defining jet variables are presented.