Phenomenology of single-inclusive jet production with jet radius and threshold resummation

TL;DR

This paper investigates the impact of joint threshold and jet radius resummation on inclusive jet production predictions at the LHC, showing significant improvements over standard NLO calculations and emphasizing its importance for parton distribution function fits.

Contribution

It introduces a formalism for joint resummation of threshold and jet radius effects at NLL accuracy and demonstrates its effectiveness in describing LHC jet data.

Findings

Joint resummation improves data description significantly.

Resummation effects are crucial for accurate PDF fits.

Enhanced theoretical predictions match CMS data at 7 and 13 TeV.

Abstract

We perform a detailed study of inclusive jet production cross sections at the LHC and compare the QCD theory predictions based on the recently developed formalism for threshold and jet radius joint resummation at next-to-leading logarithmic accuracy to inclusive jet data collected by the CMS collaboration at $\sqrt{S} = 7$ and $13$TeV. We compute the cross sections at next-to-leading order in QCD with and without the joint resummation for different choices of jet radii $R$ and observe that the joint resummation leads to crucial improvements in the description of the data. Comprehensive studies with different parton distribution functions demonstrate the necessity of considering the joint resummation in fits of those functions based on the LHC jet data.