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We present cosmological constraints from a joint analysis including the powerspectrum and bispectrum of BOSS galaxies based on the Effective Field Theory ofLarge-Scale Structure predictions at one-loop order, in combination with CMBdata from Planck, Supernovae from Pantheon+, and BAO from eBOSS and 6dF/MGS.Limits on $\Lambda$CDM parameters are in good agreement, and on average $\sim5-10\%$ tighter, compared to former results including similar datasets but nobispectrum. Moreover, we find that galaxies at the three-point level withone-loop precision are decisive for the dark energy equation of state,constrained to be $w =-0.975 \pm 0.019$ at $68\%$CL. This value, consistent at$\sim 1.3\sigma$ with a cosmological constant, represents an improvement ofabout $140\%$ with respect to former determination. Our analyses illustrate theimportance of beyond-two-point statistics at the highest reachable scales inconstraining cosmological parameters, and in particular departure from$\Lambda$CDM.

Cosmological constraints from combined probes with the three-point statistics of galaxies at one-loop precision