Boosting new physics searches in $$t{\bar{t}}Z$$ and tZj production with angular moments

Abraham, Roshan Mammen; Gonçalves, Dorival

doi:10.1140/epjc/s10052-023-12148-9

Title: Boosting new physics searches in $$$$t{\bar{t}}Z$$$$ and tZj production with angular moments

Journal Article · 25 October 2023 · European Physical Journal. C, Particles and Fields (Online)

DOI: https://doi.org/10.1140/epjc/s10052-023-12148-9 · OSTI ID:2203755

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Abstract The angular moments of the Z boson can be used as analyzers for the underlying production dynamics for the $$$$t{{\bar{t}}} Z$$$$ $t \bar{t} Z$ and tZj processes. In this manuscript, we derive these angular moments at leading and next-to-leading order in QCD at the LHC. We show that these observables work as efficient probes to beyond the Standard Model effects, considering the Standard Model Effective Field theory framework. Remarkably, we observe that these probes unveil blind directions to CP-odd operators, providing sizable new physics sensitivity at the 14 TeV LHC with 3 ab $$$$^{-1}$$$$ $^{- 1}$ of data.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0016013

OSTI ID:: 2203755

Journal Information:: European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 10 Vol. 83; ISSN 1434-6052

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: Germany

Language:: English

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