Report

PUBDB-2025-04913

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Combined effective field theory interpretation of $t\bar{t}$ rapidity and energy asymmetry measurements using $\sqrt{s}=13$ TeV ATLAS data

ATLAS Collaboration (Collaboration author)DESY*

2025

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Please use a persistent id in citations: doi:10.3204/PUBDB-2025-04913

Report No.: ATL-PHYS-PUB-2025-037

Abstract: Measurements of the rapidity asymmetry in top-quark pair production and the energy asymmetry in the top-quark pair production associated with an energetic jet provide information on effective field theory parameters. A combination of the rapidity asymmetry and energy asymmetry measurements is performed, taking the correlations between the systematic uncertainties and the statistical correlations due to overlapping events into account. Using a combined fit, limits on several Standard Model effective field theory coefficients are set. The combined results resolve directions in the coefficient space which are insensitive in the individual measurements.

Keyword(s): Combination, asymmetry, top-quark pair ; TOP

Note: All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2025-037. The authors list may be incomplete!

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

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

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2025

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