A Parton Shower for High Energy Jets

TL;DR

This paper introduces a novel method to match multi-parton states from the High Energy Jets Monte Carlo with the Ariadne parton shower, effectively handling divergences to produce exclusive, hadronized multi-jet events in hadronic collisions.

Contribution

A new, shower-independent matching method that accurately combines high-energy multi-parton states with parton showers, preserving divergence structures.

Findings

Successfully matches multi-parton states with parton showers

Enables generation of fully exclusive, hadronized multi-jet events

Addresses divergence subtraction in the matching process

Abstract

We present a method to match the multi-parton states generated by the High Energy Jets Monte Carlo with parton showers generated by the Ariadne program using the colour dipole model. The High Energy Jets program already includes a full resummation of soft divergences. Hence, in the matching it is important that the corresponding divergences in the parton shower are subtracted, keeping only the collinear parts. We present a novel, shower-independent method for achieving this, enabling us to generate fully exclusive and hadronized events with multiple hard jets, in hadronic collisions. We discuss in detail the arising description of the soft, collinear and hard regions by examples in pure QCD jet-production.