Herwig 7.3 release note

Gavin Bewick

doi:10.1140/epjc/s10052-024-13211-9

Herwig 7.3 release note

2024-10-14

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AI

G

Gavin Bewick

S

Silvia Ferrario Ravasio

Andreas Papaefstathiou

DOI：10.1140/epjc/s10052-024-13211-9

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Abstract

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A new release of the Monte Carlo event generator Herwig (version 7.3) has been launched. This iteration encompasses several enhancements over its predecessor, version 7.2. Noteworthy upgrades include: the implementation of a process-independent electroweak angular-ordered parton shower integrated with QCD and QED radiation; a new recoil scheme for initial-state radiation improving the behaviour of the angular-ordered parton shower; the incorporation of the heavy quark effective theory to refine the hadronization and decay of excited heavy mesons and heavy baryons; a dynamic strategy to regulate the kinematic threshold of cluster splittings within the cluster hadronization model; several improvements to the structure of the cluster hadronization model allowing for refined models; the possibility to extract event-by-event hadronization corrections in a well-defined way; the possibility of using the string model, with a dedicated tune. Additionally, a new tuning of the parton shower and hadronization parameters has been executed. This article discusses the novel features introduced in version 7.3.0.

Keywords:

EXCITED HEAVY MESONS

TRANSVERSE-MOMENTUM

ROOT-S=8 TEV

DISTRIBUTIONS

DECAY

QCD

Herwig 7.3 release note

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