Abstract
Extending the transverse momentum dependent factorization to thrust dependent observables entails a series of difficulties, ultimately associated to the behavior of soft radiation. As a consequence, the definition of the transverse momentum dependent functions has to be revised, while preserving (and possibly extending) their universality properties. Moreover, the regularization of the rapidity divergences generates non trivial correlations between rapidity and thrust. In this paper, we show how to deal with these correlations in a consistent treatment of the thrust dependence of e+e− → h X cross section, where the hadron transverse momentum is measured with respect to the thrust axis. In this framework all results obtained in the past few years properly fit together, leading to a remarkable phenomenological description of the experimental measurements.
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Acknowledgments
We thank T.C. Rogers and J.O. Gonzalez-Hernandez for useful discussions. This work is supported in part by the U.S. Department of Energy (DOE) Contract No. DE-AC05-06OR23177, under which Jefferson Science Associates, LLC operates Jefferson Lab. We acknowledge partial support by the European Union’s Horizon 2020 research and innovation programme, under grant agreement No 824093.
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Boglione, M., Simonelli, A. Full treatment of the thrust distribution in single inclusive e+e− → h X processes. J. High Energ. Phys. 2023, 6 (2023). https://doi.org/10.1007/JHEP09(2023)006
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DOI: https://doi.org/10.1007/JHEP09(2023)006