Searches for new physics with boosted top quarks in the MadAnalysis 5 and Rivet frameworks

Araz, J. Y., Buckley, A. and Fuks, B. (2023) Searches for new physics with boosted top quarks in the MadAnalysis 5 and Rivet frameworks. European Physical Journal C, 83(7), 664. (doi: 10.1140/epjc/s10052-023-11779-2)

Abstract

High-momentum top quarks are a natural physical system in collider experiments for testing models of new physics, and jet substructure methods are key both to exploiting their largest decay mode and to assuaging resolution difficulties as the boosted system becomes increasingly collimated in the detector. To be used in new-physics interpretation studies, it is crucial that related methods get implemented in analysis frameworks allowing for the reinterpretation of the results of the LHC such as MadAnalysis 5 and Rivet. We describe the implementation of the HEPTopTagger algorithm in these two frameworks, and we exemplify the usage of the resulting functionalities to explore the sensitivity of boosted top reconstruction performance to new physics contributions from the Standard Model Effective Field Theory. The results of this study lead to important conclusions about the implicit assumption of Standard-Model-like top quark decays in associated collider analyses, and for the prospects to constrain the Standard Model Effective Field Theory via kinematic observables built from boosted semi-leptonic tt¯ events selected using HEPTopTagger.

• Item Type: Articles
• Additional Information: This work has been partly supported by the French ANR (Grant ANR-21-CE31-0013, ‘DMwithLLPatLHC’), by the UK Royal Society (Grant UF160548) and STFC (Grant ST/S000887/1), and by a short-term studentship funded by the European Union’s Horizon 2020 research and innovation programme as part of the Marie Sklodowska-Curie Innovative Training Network MCnetITN3 (Grant agreement no. 722104).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Buckley, Professor Andy
• Authors: Araz, J. Y., Buckley, A., and Fuks, B.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: European Physical Journal C
• Publisher: Springer
• ISSN: 1434-6044
• ISSN (Online): 1434-6052
• Copyright Holders: Copyright © TheAuthor(s) 2023
• First Published: First published in European Physical Journal C 83:664
• Publisher Policy: Reproduced under a creative commons licence

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
302375		Particle Physics Experiment (PPE) Consolidated	Anthony Doyle	Science and Technology Facilities Council (STFC)	ST/S000887/1	P&S - Physics & Astronomy