Two-loop QCD corrections to massless quark-gluon scattering

Details Two-loop QCD corrections to massless quark-gluon scattering Two-loop QCD corrections to massless quark-gluon scattering

2001-01-26

arxiv.org/abs/hep-ph/0101304v4

Nucl.Phys.B605:486-516,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, LaTeX, JHEP class, typo in Eq.4.6 fixed, typo in Eq 3.2 fixed

Scientific paper

10.1016/S0550-3213(01)00195-X

We present the O(alphas^4) virtual QCD corrections to the scattering process of massless quark qqbar -> gg due to the interference of tree and two-loop amplitudes and to the self-interference of one-loop amplitudes. We work in conventional dimensional regularisation and our results are renormalised in the MSbar scheme. The structure of the infrared divergences agrees with that predicted by Catani while expressions for the finite remainder are given for the qqbar -> gg and the qg -> qg (gqbar -> gqbar) scattering processes in terms of logarithms and polylogarithms that are real in the physical region. These results, together with those previously obtained for quark-quark scattering, are important ingredients in the next-to-next-to-leading order contribution to inclusive jet production at hadron colliders.

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