Precision Top Mass Measurement Using Energy Correlators

Jack Holguin, Ian Moult, Aditya Pathak, Massimiliano Procura, Robert Schöfbeck, Dennis Schwarz

Publications: Contribution to journalMeeting abstract/Conference paperPeer Reviewed


Precision top mass measurements at hadron colliders have been notoriously difficult. The fundamental challenge in the current approaches lies in achieving simultaneously high top mass sensitivity and good theoretical control. Inspired by the use of standard candles in cosmology, we overcome this problem by showing that a single energy correlator-based observable that reflects the characteristic angular scales associated with both the W-boson and top quark can be constructed. This gives direct access to the dimensionless quantity mt/mW, from which mt can be extracted in a well-defined short-distance mass scheme as a function of the well-known mW. A Monte-Carlo-based study is performed to demonstrate the properties of our observable and the statistical feasibility of its extraction from the Run 2 and 3 and High-Luminosity LHC data sets. The resulting mt has remarkably small uncertainties from hadronization effects and is insensitive to the underlying event and parton distribution functions. Our proposed observable provides a road map for a rich program to achieve a top mass determination at the LHC with record precision.
Original languageEnglish
Article number312
Number of pages8
JournalProceedings of Science
Publication statusPublished - 21 Mar 2024
Event2023 European Physical Society Conference on High Energy Physics, EPS-HEP 2023 - Hamburg, Germany
Duration: 21 Aug 202325 Aug 2023

Austrian Fields of Science 2012

  • 103012 High energy physics

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