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Azimuthal decorrelations between QCD jets at all orders

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arxiv 0804.3786 v1 pith:OGALM375 submitted 2008-04-23 hep-ph

classification hep-ph
keywords jetsazimuthalimportantinformationlogarithmicresummationaccessaccuracy
verification ladder T0 review T1 audit T2 compute T3 formal
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A quantity that promises to reveal important information on perturbative and non-perturbative QCD dynamics is the azimuthal decorrelation between jets in different hard processes. In order to access this information fixed-order NLO predictions need to be supplemented by resummation of logarithmic terms which are large in the region where the jets are nearly back-to-back in azimuth. In the present letter we carry out this resummation to next-to--leading logarithmic accuracy explaining the important role played by the recombination scheme in general resummations for such jet observables.

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