Matching of Resummed NLLA with Fixed NNLO for Event Shapes
T. Gehrmann, G. Luisoni, H. Stenzel
TL;DR
This paper presents a method to combine NLLA resummation with NNLO fixed-order calculations for event shape variables in electron-positron annihilation, improving precision in three-jet region analysis.
Contribution
It introduces a matching procedure of NLLA with NNLO calculations, enhancing the accuracy of theoretical predictions for event shape observables.
Findings
The combined NLLA+NNLO correction is small in the three-jet region.
Matching improves the precision of event shape predictions.
The correction is more accurate than pure NNLO or NLLA+NLO approaches.
Abstract
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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Taxonomy
TopicsGenerative Adversarial Networks and Image Synthesis · Image Processing and 3D Reconstruction · Image Retrieval and Classification Techniques