Sound horizon independent measurement of from BOSS, DESI and DES Y3
Phys. Rev. D 114, 023518 – Published 7 July, 2026
DOI: https://doi.org/10.1103/nr16-k682
Abstract
We present a sound horizon independent measurement of the Hubble parameter using a multiprobe large-scale structure analysis in the model. Removing the dependency on the sound horizon with a rescaling procedure at the matter power spectrum level, we analyze the BOSS full-shape power spectrum and bispectrum (for the first time) using the effective field theory of large-scale structure up to one loop. We combine this analysis with the auto- and cross-angular power spectra from the DESI Legacy Imaging Survey DR9, the analysis from DES Y3 within EFTofLSS framework, and the cosmic microwave background gravitational lensing power spectrum from Planck PR3. Our baseline analysis, which does not rely on supernovae data, yields , , and , corresponding to 3%–4% precision measurements. When adding supernovae data from Pantheon+, we obtain a 2.6% measurement of , with . We further note that our EFTBOSS analysis indicates a slight deviation of the BAO scale parameter (at ) from its value, caused by the small scales of the bispectrum. We finally use the sound horizon-free EFTBOSS analysis as a diagnosis for the presence of new physics, finding that our results are consistent with the recent hints of evolving dark energy.