Preprint

PUBDB-2023-07714

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Precision Top Mass Measurement Using Energy Correlators

Holguin, J. ; Moult, I. ; Pathak, A. (Corresponding author)DESY* ; Procura, M. ; Schöfbeck, R. ; Schwarz, D.

2023

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Please use a persistent id in citations: doi:10.3204/PUBDB-2023-07714

Report No.: DESY-23-189; arXiv:2311.14389

Abstract: 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 can be constructed that reflects the characteristic angular scales associated with both the $W$-boson and top quark. This gives direct access to the dimensionless quantity $m_{t}/m_{W}$, from which $m_{t}$ can be extracted in a well-defined short-distance mass scheme as a function of the well-known $m_{W}$. 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 $m_t$ 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.

Keyword(s): top, mass ; parton, distribution function ; energy, correlation function ; hadronization, effect ; CERN LHC Coll ; underlying event ; sensitivity ; statistical ; hadron ; cosmological model

Note: 6 pages, 5 figures, Proceedings of the European Physical Society Conference on High Energy Physics (EPS-HEP2023) 21-25 August 2023, Hamburg, Germany

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2023

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Database coverage:
; ; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article/Contribution to a conference proceedings Holguin, J. ; Moult, I. ; Pathak, A. (Corresponding author)DESY* ; Procura, M. ; Schoefbeck, R. ; Schwarz, D.
Precision Top Mass Measurement Using Energy Correlators
20242023 European Physical Society Conference on High Energy Physics, EPS-HEP2023, HamburgHamburg, Germany, 21 Aug 2023 - 25 Aug 20232023-08-212023-08-25 Proceedings of Science / International School for Advanced Studies (EPS-HEP2023), 312 (2024) [10.22323/1.449.0312]2024     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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