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    Sound horizon independent measurement of H0 from BOSS, DESI and DES Y3

    Zhiyu Lu1,2,*, Théo Simon3,†, Vivian Poulin3, and Yifu Cai1,2

    • *Contact author: zhiyulu@mail.ustc.edu.cn
    • †Contact author: theo.simon@umontpellier.fr

    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 ΛCDM 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 3×2  pt 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 h=0.702−0.024+0.022, Ωm=0.310±0.013, and σ8=0.799±0.020, corresponding to 3%–4% precision measurements. When adding supernovae data from Pantheon+, we obtain a 2.6% measurement of h, with h=0.686±0.018. We further note that our EFTBOSS analysis indicates a slight deviation of the BAO scale parameter αrs (at 1.8σ) from its ΛCDM 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.

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