Heavy quark radiation in NLO+PS POWHEG generators

TL;DR

This paper introduces a new algorithm for modeling radiation from heavy quarks in NLO+PS generators, improving accuracy and implementation in the POWHEG-BOX framework, with comparisons to previous methods for bottom and top quark production.

Contribution

A novel algorithm for heavy quark radiation in NLO+PS generators implemented in POWHEG-BOX, offering advantages over previous methods.

Findings

The new algorithm shows improved modeling of heavy quark radiation.

Implementation in POWHEG-BOX facilitates practical use in collider simulations.

Comparative analysis demonstrates benefits over earlier approaches.

Abstract

In this paper we deal with radiation from heavy quarks in the context of next-to-leading order calculations matched to parton shower generators. A new algorithm for radiation from massive quarks is presented that has considerable advantages over the one previously employed. We implement the algorithm in the framework of the ${\tt POWHEG-BOX}$, and compare it with the previous one in the case of the ${\tt hvq}$ generator for bottom production in hadronic collisions, and in the case of the ${\tt bb4l}$ generator for top production and decay.