Power corrections to event shapes using Eikonal dressed gluon exponentiation

Agarwal, Neelima and Mukhopadhyay, Ayan and Pal, Sourav and Tripathi, Anurag (2021) Power corrections to event shapes using Eikonal dressed gluon exponentiation. Journal of High Energy Physics, 2021 (3). ISSN 1029-8479

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Abstract

Event shapes are classical tools for the determination of the strong coupling and for the study of hadronization effects in electron-positron annihilation. In the context of analytical studies, hadronization corrections take the form of power-suppressed contributions to the cross section, which can be extracted from the perturbative ambiguity of Borel-resummed distributions. We propose a simplified version of the well-established method of Dressed Gluon Exponentiation (DGE), which we call Eikonal DGE (EDGE), which determines all dominant power corrections to event shapes by means of strikingly elementary calculations. We believe our method can be generalized to hadronic event shapes and jet shapes of relevance for LHC physics.

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