Matching of Resummed NLLA with Fixed NNLO for Event Shapes
classification
✦ hep-ph
keywords
nllannloeventfixedmatchingannihilationapproximationcalculation
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We report work on the matching of the next-to-leading logarithmic approximation (NLLA) onto the fixed next-to-next-to-leading order (NNLO) calculation for event shape variables in electron-positron annihilation. The correction of the combined NLLA+NNLO computation in the three-jet region, relevant for precision phenomenology, is small compared with pure NNLO or NLLA+NLO.
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