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H 0 without the sound horizon (or supernovae): A 2% measurement in DESI DR1

Zaborowski, E.A. [The Ohio State Univ., Columbus, OH (United States); et al.] (ORCID:0000000267794277)·Taylor, P.·Honscheid, K. (ORCID:0000000265502023)·Cuceu, A. (ORCID:0000000221690595)·de Mattia, A. (ORCID:0000000309202947)·Krolewski, A.·Rashkovetskyi, M. (ORCID:0000000171442349)·Ross, A.J. (ORCID:0000000275229083)·To, C.·Aguilar, J.·Ahlen, S. (ORCID:0000000160987247)·Anand, A. (ORCID:0000000329231585)·BenZvi, S. (ORCID:0000000155374710)·Bianchi, D. (ORCID:0000000197120006)·Brooks, D.·Castander, F.J. (ORCID:0000000173164573)·Claybaugh, T.·de la Macorra, A. (ORCID:0000000217691640)·Della Costa, J. (ORCID:0000000309282000)·Doel, P.·Ferraro, S. (ORCID:0000000349927854)·Font-Ribera, A. (ORCID:0000000230337312)·Forero-Romero, J.E. (ORCID:0000000228903725)·Gaztañaga, E. (ORCID:0000000196320815)·Gutierrez, G.·Herrera-Alcantar, H.K. (ORCID:0000000291369609)·Howlett, C. (ORCID:0000000210819410)·Huterer, D. (ORCID:0000000165580112)·Ishak, M. (ORCID:000000026024466X)·Joyce, R. (ORCID:0000000302015241)·Kirkby, D. (ORCID:0000000288285463)·Kisner, T. (ORCID:0000000335107134)·Kremin, A. (ORCID:0000000163567424)·Lahav, O.·Lamman, C. (ORCID:0000000267319329)·Landriau, M. (ORCID:0000000318388528)·Le Guillou, L. (ORCID:0000000171788868)·Manera, M. (ORCID:0000000349628934)·Martini, P. (ORCID:0000000242794182)·Meisner, A. (ORCID:0000000211257384)·Miquel, R.·Moustakas, J. (ORCID:0000000227334559)·Nadathur, S. (ORCID:0000000190703102)·Niz, G. (ORCID:0000000215448946)·Palanque-Delabrouille, N. (ORCID:000000033188784X)·Percival, W.J. (ORCID:0000000206445727)·Prada, F. (ORCID:0000000171458674)·Pérez-Ràfols, I. (ORCID:0000000169790125)·Rossi, G.·Samushia, L. (ORCID:0000000216095687)·Sanchez, E. (ORCID:0000000296468198)·Schlegel, D.·Schubnell, M.·Seo, H. (ORCID:0000000265883508)·Silber, J. (ORCID:0000000234610320)·Sprayberry, D.·Tarlé, G. (ORCID:0000000317040781)·Weaver, B.A.·Zarrouk, P. (ORCID:0000000273059578)·Zhou, R. (ORCID:0000000153814372)·Zou, H. (ORCID:0000000266843997)
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Abstract

The sound horizon scale rs is a key source of information for measurements of H 0 from early-time data, and is therefore a common target of new physics proposed to solve the Hubble tension. We present a sub-2% measurement of the Hubble constant that is independent of this scale, using data from the first data release of the Dark Energy Spectroscopic Instrument (DESI DR1). Building on previous work, we remove dependency on the sound horizon size using a heuristic rescaling procedure at the power spectrum level. A key innovation is the inclusion of uncalibrated (agnostic to r s ) post-reconstruction BAO measurements from DESI DR1, as well as using the CMB acoustic scale θ* as a high-redshift anchor. Uncalibrated type-Ia supernovae are often included as an independent source of Ω m information; here we demonstrate the robustness of our results by additionally considering two supernova-independent alternative datasets. We find somewhat higher values of H 0 relative to our previous work: 69.2 +1.3 -1.4 , 70.3 +1.4 -1.2 , and 69.6 +1.3 -1.8 km s -1 Mpc -1 respectively when including measurements from i) Planck/ACT CMB lensing × unWISE galaxies, ii) the DES Year 3 6×2pt analysis, and iii) Planck/ACT CMB lensing + the DES Year 5 supernova analysis. These remarkably consistent constraints achieve better than 2% precision; they are among the most stringent sound horizon-independent measurements from LSS to date, and provide a powerful avenue for probing the origin of the Hubble tension.

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79 ASTRONOMY AND ASTROPHYSICScosmological parameters from LSSphysics of the early universepower spectrumredshift surveys

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BibTeXRIS

Zaborowski, E.A. [The Ohio State Univ., Columbus, OH (United States); et al.] (ORCID:0000000267794277), Taylor, P., Honscheid, K. (ORCID:0000000265502023), Cuceu, A. (ORCID:0000000221690595), de Mattia, A. (ORCID:0000000309202947), Krolewski, A., Rashkovetskyi, M. (ORCID:0000000171442349), Ross, A.J. (ORCID:0000000275229083), To, C., Aguilar, J., Ahlen, S. (ORCID:0000000160987247), Anand, A. (ORCID:0000000329231585), BenZvi, S. (ORCID:0000000155374710), Bianchi, D. (ORCID:0000000197120006), Brooks, D., Castander, F.J. (ORCID:0000000173164573), Claybaugh, T., de la Macorra, A. (ORCID:0000000217691640), Della Costa, J. (ORCID:0000000309282000), Doel, P., Ferraro, S. (ORCID:0000000349927854), Font-Ribera, A. (ORCID:0000000230337312), Forero-Romero, J.E. (ORCID:0000000228903725), Gaztañaga, E. (ORCID:0000000196320815), Gutierrez, G., Herrera-Alcantar, H.K. (ORCID:0000000291369609), Howlett, C. (ORCID:0000000210819410), Huterer, D. (ORCID:0000000165580112), Ishak, M. (ORCID:000000026024466X), Joyce, R. (ORCID:0000000302015241), Kirkby, D. (ORCID:0000000288285463), Kisner, T. (ORCID:0000000335107134), Kremin, A. (ORCID:0000000163567424), Lahav, O., Lamman, C. (ORCID:0000000267319329), Landriau, M. (ORCID:0000000318388528), Le Guillou, L. (ORCID:0000000171788868), Manera, M. (ORCID:0000000349628934), Martini, P. (ORCID:0000000242794182), Meisner, A. (ORCID:0000000211257384), Miquel, R., Moustakas, J. (ORCID:0000000227334559), Nadathur, S. (ORCID:0000000190703102), Niz, G. (ORCID:0000000215448946), Palanque-Delabrouille, N. (ORCID:000000033188784X), Percival, W.J. (ORCID:0000000206445727), Prada, F. (ORCID:0000000171458674), Pérez-Ràfols, I. (ORCID:0000000169790125), Rossi, G., Samushia, L. (ORCID:0000000216095687), Sanchez, E. (ORCID:0000000296468198), Schlegel, D., Schubnell, M., Seo, H. (ORCID:0000000265883508), Silber, J. (ORCID:0000000234610320), Sprayberry, D., Tarlé, G. (ORCID:0000000317040781), Weaver, B.A., Zarrouk, P. (ORCID:0000000273059578), Zhou, R. (ORCID:0000000153814372), Zou, H. (ORCID:0000000266843997). 2026-04-02. H 0 without the sound horizon (or supernovae): A 2% measurement in DESI DR1. https://doi.org/10.1088/1475-7516/2026/04/004

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79 ASTRONOMY AND ASTROPHYSICS subjectcosmological parameters from LSS subjectphysics of the early universe subjectpower spectrum subjectredshift surveys subject

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