Hadron-in-jet production at partonic threshold
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.
Cite
@article{arxiv.1910.11746,
title = {Hadron-in-jet production at partonic threshold},
author = {Tom Kaufmann and Xiaohui Liu and Asmita Mukherjee and Felix Ringer and Werner Vogelsang},
journal= {arXiv preprint arXiv:1910.11746},
year = {2020}
}
Comments
22 pages, 4 figures