Probing Neutral Triple Gauge Couplings at e- p colliders

Abstract

The Standard Model Effective Field Theory~(SMEFT) has attracted much attention as a model-independent way for probing new physical signals. In the SMEFT framework, $e^{-}p$ colliders can be used to study new interactions of gauge bosons, such as neutral Triple Gauge Couplings~(nTGCs). We study the signals and backgrounds of six different processes at the Future Circular Collider-hadron electron~(FCC-he) and propose different event selection strategies. The expected constraints on the coefficients of the dimension-8 operators for each process, as well as the combined constraints are obtained. The results show that the sensitivity of $e^{-}p$ colliders to nTGCs is similar to the current Large Hadron Collider~(LHC) experiments and is more competitive than that of Circular Electron Positron Collider~(CEPC) experiments.

30 pages, 20 figures

References in corpus (9)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• FeynRules - Feynman rules made easy
• An Effective Guide to Beyond the Standard Model Physics
• Unitarity Constraints on Dimension-Six Operators
• On the Development of Effective Field Theory
• New Physics in $e^{+}{e}^{-}\to Z\gamma$ at the ILC with polarized beams: Explorations beyond conventional anomalous triple gauge boson coupling
• Searching for the neutral triple gauge couplings in the process ${\mu }^{+}{\mu }^{-}\to \gamma \nu \bar{\nu }$ at muon colliders
• $CP$-violating effects of the neutral triple gauge couplings in $Z(\ell \ell )\gamma$ production at the LHC