W+jets as a background to top physics: the quest for many jets

TL;DR

This paper reviews recent advances in calculating W+jets processes at hadron colliders, focusing on one-loop QCD calculations and improvements in Monte Carlo simulations to better understand backgrounds in top physics.

Contribution

It presents the latest one-loop QCD calculations for W+3jets and Wb final states and discusses enhancements in Monte Carlo event generators for more accurate background modeling.

Findings

Successful completion of one-loop calculations for W+3jets and Wb.

Improved Monte Carlo methods combining matrix elements with parton showers.

Enhanced understanding of W+jets as backgrounds in top physics.

Abstract

The latest progress in calculating electroweak gauge boson production in association with QCD jets at hadron colliders is summarized. Particular emphasis is given to the recently completed QCD one-loop calculations of W+3jets and Wb final states. Furthermore recent developments in improving Monte Carlo event generators by means of combining tree-level matrix elements with parton showers is reviewed.