Subjet Rates in Hadron Collider Jets

TL;DR

This paper presents a calculation of subjet rates in hadron collider jets using the kt algorithm, enabling precise theoretical predictions that include leading and next-to-leading logarithms, matching leading order results and behaving well near thresholds.

Contribution

It introduces a method to compute subjet rates with resummation of logarithms using the kt algorithm, improving theoretical accuracy in jet analysis.

Findings

Accurate calculation of subjet rates with resummation of logarithms.

Matching leading order results in alpha_s.

Good behavior of the calculation near thresholds.

Abstract

We calculate the subjet rates for jets produced in hadron collisions. The kt algorithm is used to define the jets and allows the theoretical calculation to sum both the leading and next-to-leading logarithms in the resolution variable, ycut. We also ensure that our calculation matches exactly the leading order in alpha_s result and has sensible behaviour near thresholds.