An EFT study of the $pp\to \bar{t}tZ(ll)h(bb)$ process at the FCC-$\mathbf{hh}$

Abstract

We carry out an Effective Field Theory (EFT) study of the $pp\to \bar{t}tZh$ process in the $4b + 3 \ell + \ge 2j + \slashed{E}_T$ final state. This process can uniquely probe the $\bar{t}tZh$ couplings arising from higher dimensional EFT operators and can also provide bounds on $\bar{t}tZ$ coupling deviations. We highlight the importance of the proposed proton-proton Future Circular Collider (FCC-$hh$) to study this process and then perform a complete collider analysis by examining the relevant background processes. This allows us to determine the FCC-$hh$ sensitivity to probe anomalous $\bar{t}tZh$ couplings.

v2: 18 pages, 5 figures, and 3 tables; version published in EPJC

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