Inclusive Cross Sections in ME+PS Merging

TL;DR

This paper presents an extension to ME+PS merging algorithms that preserves inclusive cross sections at various orders, reducing large logarithmic contributions and improving theoretical accuracy in particle physics simulations.

Contribution

It introduces a new algorithm for matrix element plus parton shower merging that maintains inclusive cross sections at leading and next-to-leading order.

Findings

Preserves inclusive cross sections at input order.

Reduces large logarithmic contributions.

Enhances accuracy of particle physics simulations.

Abstract

We discuss an extension of matrix element plus parton shower merging at leading and next-to-leading order. The algorithm does preserve inclusive cross sections at the respective input order. This constraint avoids potentially large logarithmic contributions, which would require approximate (N)NLO contributions to cancel against.