{"paper":{"title":"Probing the matter-dominated expansion with multi-redshift Lyman-$\\alpha$ BAO from DESI DR2","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Brodzeller, A. Cuceu, A. de la Macorra, A. Font-Ribera, A. Kremin, A. Lambert, Alma X. Gonzalez-Morales, A. Meisner, A. Mu\\~noz-Guti\\'errez, Arjun Dey, B. A. Weaver, C. Hahn, C. Poppett, C. Ravoux, Cristhian Garcia-Quintero, C. Saulder, C. Y\\`eche, D. Bianchi, D. Brooks, D. Huterer, D. Kirkby, D. Schlegel, E. Chaussidon, Edwin L. P\\'erez-Ochoa, E. Gazta\\~naga, E. Paillas, Eric Armengaud, E. Sanchez, F. Beutler, F. Prada, G. Gutierrez, G. Niz, G. Rossi, G. Tarl\\'e, Hiram K. Herrera-Alcantar, H. Seo, I. P\\'erez-R\\`afols, J. Aguilar, J. E. Forero-Romero, J. Moustakas, J. Silber, Julien Guy, K. Honscheid, K. S. Dawson, L. Le Guillou, L. Samushia, M. Ishak, M. Landriau, M. Manera, M. Schubnell, N. Palanque-Delabrouille, O. Lahav, P. Martini, R. Kehoe, R. Miquel, R. Ruggeri, R. Zhou, S. Ahlen, S. Ferraro, S. Nadathur, T. Claybaugh, T. Karim, W. J. Percival","submitted_at":"2026-07-21T22:58:21Z","abstract_excerpt":"We present a multi-redshift Baryon Acoustic Oscillations (BAO) analysis of the DESI Data Release 2 (DR2) Lyman-$\\alpha$ (Ly$\\alpha$) forest, splitting the forest auto-correlation and its cross-correlation with quasars into three redshift bins. We obtain BAO measurements at effective redshifts $z_{\\rm eff} = 2.13$, $2.40$, and $2.81$ with $\\sim2.0$--$2.5\\%$ precision per bin in the radial and transverse directions, corresponding to $\\sim1.1$--$1.2\\%$ precision for the isotropic BAO measurement. Using the same data products and modeling framework as the DESI DR2 Ly$\\alpha$ BAO analysis, we valid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.19619","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.19619/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}