English

Teaming up MET plus jet with Drell-Yan in the SMEFT

High Energy Physics - Phenomenology 2025-03-19 v1

Abstract

The Standard Model Effective Field Theory (SMEFT) is a widely utilized framework for exploring new physics effects in a model-independent manner. In previous studies, Drell-Yan collider data has emerged as a promising signature due to its energy enhancement relative to Standard Model predictions. We present recent works, extending this approach by also considering the "missing energy + jet" signature, which can constrain related dineutrino couplings and similarly benefits from energy enhancement. The combination of these observables allows for constraining a broader selection of operators and helps resolve flat directions in a global analysis. Overall, the bounds probe the multi-TeV range, with the strongest reaching up to 10  TeV10\; \text{TeV} for four-fermion interactions and 7  TeV7 \;\text{TeV} for gluonic dipole interactions. Furthermore, we find that low energy flavor observables improve limits by up to a factor of three for dipole operators. We also estimate sensitivities to new physics at future hadron colliders including the s=27  TeV\sqrt{s} = 27 \;\text{TeV} HE-LHC and the s=100  TeV\sqrt{s} = 100 \; \text{TeV} FCC-hh.

Keywords

Cite

@article{arxiv.2503.13638,
  title  = {Teaming up MET plus jet with Drell-Yan in the SMEFT},
  author = {Gudrun Hiller and Lara Nollen and Daniel Wendler},
  journal= {arXiv preprint arXiv:2503.13638},
  year   = {2025}
}

Comments

Contribution prepared for the DISCRETE 2024 proceedings, 7 pages, 3 figures