TMD Evolution and Multi-Jet Merging

TL;DR

This paper explores how the evolution of transverse momentum dependent distributions affects multi-jet production in high-energy hadronic collisions, proposing a new merging method and comparing it with LHC data.

Contribution

It introduces a novel merging methodology that incorporates TMD evolution effects into multi-jet simulations at high energies.

Findings

TMD evolution influences multi-jet structure and systematics.

The new merging method improves agreement with LHC measurements.

Potential reduction in theoretical uncertainties for multi-jet predictions.

Abstract

The theoretical description of the physics of multi-jets in hadronic collisions at high energies is based on "merging" methods, which combine short-timescale production of jets with long-timescale evolution of partonic showers. We point out potential implications of the evolution of transverse momentum dependent (TMD) distributions on the structure of multi-jet states at high energies, and in particular on the theoretical systematics associated with multi-jet merging. To analyze this, we propose a new merging methodology, and illustrate its impact by comparing our theoretical results with experimental measurements for Z-boson + jets production at the Large Hadron Collider (LHC).