QCD resummation for jet substructures
Hsiang-nan Li, Zhao Li, C.-P. Yuan
TL;DR
This paper develops a perturbative QCD framework to predict jet energy profiles and mass distributions, successfully matching experimental data from Tevatron and LHC, advancing understanding of jet substructure.
Contribution
It introduces a novel resummation formalism for jet energy profiles and mass distributions, improving theoretical predictions in jet physics.
Findings
Predicted jet energy profiles agree with Tevatron and LHC data.
Resummation formalism accurately predicts jet mass distribution peaks.
The approach reduces uncertainties in jet substructure analysis.
Abstract
We provide a novel development in jet physics by predicting the energy profiles of light-quark and gluon jets in the framework of perturbative QCD. Resumming large logarithmic contributions to all orders in the coupling constant, our predictions are shown to agree well with Tevatron CDF and Large-Hadron-Collider CMS data. We also extend our resummation formalism to the invariant mass distributions of light-quark and gluon jets produced in hadron collisions. The predicted peak positions and heights in jet mass distributions are consistent with CDF data within uncertainties induced by parton distribution functions.
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