SMEFT analysis with LHeC, FCC-eh, and EIC DIS pseudodata

TL;DR

This paper explores how future high-energy deep-inelastic scattering experiments like LHeC, FCC-eh, and EIC can significantly enhance the search for new physics within the SMEFT framework by resolving parameter degeneracies.

Contribution

It demonstrates the potential of upcoming DIS experiments to improve constraints on SMEFT Wilson coefficients and incorporates Z-boson vertex corrections into EIC simulations.

Findings

LHeC and FCC-eh can resolve degeneracies in SMEFT parameter space.

DIS measurements are crucial for probing new physics beyond the Standard Model.

Enhanced simulations of EIC improve the sensitivity to SMEFT effects.

Abstract

In this study, we examine the possibilities opened by upcoming high-energy deep-inelastic scattering (DIS) experiments to investigate new physics within the framework of the Standard Model Effective Field Theory (SMEFT). Specifically, we investigate the beyond-the-Standard-Model (BSM) potential of the Large Hadron-electron Collider (LHeC) and the Future Circular lepton-hadron Collider (FCC-eh), and we improve previous simulations of the Electron-Ion Collider (EIC) by incorporating $Z$-boson vertex corrections. Our fits, performed using DIS pseudodata, reveal that the LHeC and the FCC-eh can play a crucial role in resolving degeneracies observed in the parameter space of Wilson coefficients in global fits using the Higgs, diboson, electroweak, and top data. This emphasizes the significance of precision DIS measurements in advancing our understanding of new physics.