Parton showers with quantum interference

TL;DR

This paper develops a recursive formalism for parton showers in QCD that includes quantum interference effects, color, and spin, aiming to improve compatibility with higher-order calculations in hadron collisions.

Contribution

It introduces a novel recursive approach to simulate parton showers with quantum interference, color, and spin effects, enhancing the realism of QCD event modeling.

Findings

Incorporates quantum interference in parton shower formalism.

Includes color and spin information in the shower evolution.

Provides a foundation for integrating with next-to-leading order calculations.

Abstract

We specify recursive equations that could be used to generate a lowest order parton shower for hard scattering in hadron-hadron collisions. The formalism is based on the factorization soft and collinear interactions from relatively harder interactions in QCD amplitudes. It incorporates quantum interference between different amplitudes in those cases in which the interference diagrams have leading soft or collinear singularities. It incorporates the color and spin information carried by partons emerging from a hard interaction. One motivation for this work is to have a method that can naturally cooperate with next-to-leading order calculations.