Limits on primordial non-Gaussianities from BOSS galaxy-clustering data

We analyze the power spectrum and the bispectrum of BOSS galaxy-clustering data using the prediction from the effective field theory of large-scale structure at one-loop order for both the power spectrum and the bispectrum. With ΛCDM parameters fixed to Planck preferred values, we set limits on three templates of non-Gaussianities predicted by many inflationary models: the equilateral, the orthogonal, and the local shapes. After validating our analysis against simulations, we find fNLequil=207±292, fNLᵒʳᵗʰ=-68±73, fNLˡᵒᶜ=52±34, at 68% confidence level. These bispectrum-based constraints from large-scale structure, not far from the ones of WMAP, suggest promising results from upcoming surveys.