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Two loop QCD corrections to massless quark gluon scattering

Jan, 2001

32 pages

Published in:

Nucl.Phys.B 605 (2001) 486-516

e-Print:

hep-ph/0101304 [hep-ph]

DOI:

10.1016/S0550-3213(01)00195-X

Report number:

DCPT-01-04,
IPPP-01-02,
MADPH-00-1210

View in:

ADS Abstract Service

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Abstract: (Elsevier)

We present the O (α 4 s ) virtual QCD corrections to the scattering process of massless quark q q ̄ →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 MS scheme. The structure of the infrared divergences agrees with that predicted by Catani while expressions for the finite remainder are given for the q q ̄ →gg and the qg → qg ( g q ̄ →g q ̄ ) 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.

Note:

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

QCD
Jets
LEP HERA and SLC physics
NLO and NNLO computations
quark antiquark: annihilation
gluon: pair production
quark gluon: elastic scattering
massless
quantum chromodynamics: correction
perturbation theory: higher-order

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