Teaming up MET plus jet with Drell-Yan in the SMEFT
G. Hiller, L. Nollen and D. Wendler*
*: corresponding author
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Published on: April 10, 2025
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 $10\; \text{TeV}$ for four-fermion interactions and $7 \;\text{TeV}$ 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 $\sqrt{s} = 27 \;\text{TeV}$ HE-LHC and the $\sqrt{s} = 100 \; \text{TeV}$ FCC-hh.
DOI: https://doi.org/10.22323/1.481.0002
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