Heavy flavour jet substructure

A bstract We present a comprehensive study of energy correlation functions and jet angularities for heavy-flavour QCD jets. In particular, we discuss the possibility of using these observables to expose the dead cone effect, i.e. the suppression of collinear QCD radiation around massive quarks, and to investigate the sensitivity of different observable definitions to the presence of quark masses. Our calculations are presented as all-order resummed predictions at next-to-leading-logarithmic accuracy, matched to (partial) fixed-order results to obtain a better description of the transition around the dead cone threshold. We also compare our analytic results with Pythia, Herwig and Sherpa Monte Carlo predictions to estimate the impact of non-perturbative contributions such as hadronisation, underlying events and B -hadron decays.

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Publication Details

Journal
Journal of High Energy Physics
Published
2025-02-11
DOI
https://doi.org/10.1007/jhep02(2025)046
Citations
2
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
3.74

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article

Heavy flavour jet substructure

Andrea Ghira, Simone Marzani, Grégory Soyez, Oleh Fedkevych et al.
2 citations
Journal of High Energy Physics
Particle physics theoretical and experimental studies
3.74
article

Heavy flavour jet substructure

Andrea Ghira, Simone Marzani, Grégory Soyez, Oleh Fedkevych, Prasanna K. Dhani
article en
2 citations

Abstract

A bstract We present a comprehensive study of energy correlation functions and jet angularities for heavy-flavour QCD jets. In particular, we discuss the possibility of using these observables to expose the dead cone effect, i.e. the suppression of collinear QCD radiation around massive quarks, and to investigate the sensitivity of different observable definitions to the presence of quark masses. Our calculations are presented as all-order resummed predictions at next-to-leading-logarithmic accuracy, matched to (partial) fixed-order results to obtain a better description of the transition around the dead cone threshold. We also compare our analytic results with Pythia, Herwig and Sherpa Monte Carlo predictions to estimate the impact of non-perturbative contributions such as hadronisation, underlying events and B -hadron decays.

Journal of High Energy PhysicsVol. 2025(2)
Centre National de la Recherche Scientifique (FR), Consejo Superior de Investigaciones Científicas (ES), Universitat de València (ES), Georgia State University (US), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), Parc Científic de la Universitat de València (ES), Thomas Jefferson National Accelerator Facility (US), Instituto de Física Corpuscular (ES), Istituto Nazionale di Fisica Nucleare, Sezione di Genova (IT), CEA Paris-Saclay (FR), Institut de Physique Théorique (FR), Stony Brook University (US)
U.S. Department of Energy, University of Washington, Georgia State University, European Commission, Thomas Jefferson National Accelerator Facility
Affordable and clean energy
Openalex Percentile: Top 10%
Particle physics theoretical and experimental studies
3.74
DOIOpen Access PDFOpenAlex
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