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DOE OSTI · 1659706

Hadron-in-jet production at partonic threshold

Kaufmann, Tom·Liu, Xiaohui·Mukherjee, Asmita·Ringer, Felix·Vogelsang, Werner
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Abstract

We consider the longitudinal momentum distribution of hadrons inside jets in proton-proton collisions. At partonic threshold large double logarithmic corrections arise which need to be resummed to all orders. We develop a factorization formalism within SCET that allows for the joint resummation of threshold and jet radius logarithms. We achieve next-to-leading logarithmic NLL' accuracy by including non-global logarithms in the leading-color approximation. Overall, we find that the threshold resummation leads to a sizable enhancement of the cross section and a reduced QCD scale dependence, suggesting that the all-order resummation can be important for the reliable extraction of fragmentation functions in global analyses when jet substructure data is included.

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Kaufmann, Tom, Liu, Xiaohui, Mukherjee, Asmita, Ringer, Felix, Vogelsang, Werner. 2020-02-05. Hadron-in-jet production at partonic threshold. https://doi.org/10.1007/jhep02(2020)040

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