Study of Substructure of High Transverse Momentum Jets Produced in Proton-Antiproton Collisions at sqrt(s)=1.96 TeV

TL;DR

This paper investigates the detailed internal structure of high transverse momentum jets produced in proton-antiproton collisions at 1.96 TeV, measuring jet mass, angularity, and planar flow to compare with QCD predictions.

Contribution

It provides the first measurements of jet substructure variables for high mass jets at the Tevatron, testing perturbative QCD predictions.

Findings

Jet substructure measurements agree with QCD predictions.

First measurement of jet mass, angularity, and planar flow at this energy.

Results support the validity of perturbative QCD for high pT jets.

Abstract

A study of the substructure of jets with transverse momentum greater than 400 GeV/c produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider and recorded by the CDF II detector is presented. The distributions of the jet mass, angularity, and planar flow are measured for the first time in a sample with an integrated luminosity of 5.95 fb^-1. The observed substructure for high mass jets is consistent with predictions from perturbative quantum chromodynamics.