Next-to-Leading Order Jet Physics with BlackHat

TL;DR

This paper demonstrates advanced next-to-leading order QCD calculations for jet production processes at the Tevatron and LHC using the BlackHat and SHERPA tools, providing detailed distributions and comparisons with experimental data.

Contribution

It introduces new NLO jet distribution results, including Z+3-jet and W+2-jet processes, and analyzes polarization effects at high transverse momentum.

Findings

Z+3-jet distributions at NLO are presented.

Comparison of Z+2-jet P_T distribution with CDF data.

Analysis of W polarization at high P_T.

Abstract

We present several results obtained using the BlackHat next-to-leading order QCD program library, in conjunction with SHERPA. In particular, we present distributions for vector boson plus 1,2,3-jet production at the Tevatron and at the asymptotic running energy of the Large Hadron Collider, including new Z+3-jet distributions. The Z+2-jet predictions for the second-jet P_T distribution are compared to CDF data. We present the jet-emission probability at NLO in W+2-jet events at the LHC, where the tagging jets are taken to be the ones furthest apart in pseudorapidity. We analyze further the large left-handed W polarization, identified in our previous study, for W bosons produced at high P_T at the LHC.