Boosting New Physics Searches in $t\bar{t}Z$ and $tZj$ Production with Angular Moments

Abstract

The angular moments for the $Z$ boson can be used as analyzers for the underlying production dynamics for the $t\bar{t}Z$ 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${}^{-1}$ of data.

7 pages, 6 figures, 3 tables, matches published version, updated references

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Cited by in corpus (10)

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• Hadronic Top Quark Polarimetry with ParticleNet
• Analytical Insights on Hadronic Top Quark Polarimetry
• Higher-Order Corrections to Quantum Observables in $h\to W{W}^{\ast }$
• Quantum Entanglement is Quantum: ZZ Production at the LHC
• Top-philic Machine Learning
• Top-quark spin correlations as a tool to distinguish pseudoscalar $A\to ZH$ and scalar $H\to ZA$ signatures in $Zt\bar{t}$ final states at the LHC
• Analyzing $t\bar{t}Z$-couplings at the future $e^{-}p$ collider