{"paper":{"title":"Cosmological constraints from the DESI DR1 Bispectrum Full-Shape and DR2 BAO","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Brodzeller, A. de la Macorra, A. Font-Ribera, A. Kremin, A. Meisner, B. A. Weaver (DESI Collaboration), Biprateep Dey, C. Hahn, C. Lamman, D. Bianchi, D. Brooks, D. Forero-S\\'anchez, D. Huterer, D. Kirkby, D. Schlegel, E. Sanchez, F. J. Castander, F. Prada, G. Gutierrez, G. Niz, G. Rossi, G. Tarl\\'e, H. Gil-Mar\\'in, H. K. Herrera-Alcantar, I. P\\'erez-R\\`afols, J. Aguilar, J. A. Newman, J. Della Costa, J. E. Forero-Romero, J. Moustakas, J. Silber, K. Honscheid, L. Le Guillou, L. Samushia, L. Verde, M. E. Levi, M. Ishak, M. Landriau, M. Manera, M. Schubnell, N. Palanque-Delabrouille, O. Lahav, P. Doel, R. Miquel, S. Ahlen, Satya Gontcho A Gontcho, S. Cole, S. Ferraro, S. Nadathur, S. Novell Masot, W. J. Percival","submitted_at":"2026-06-22T20:56:05Z","abstract_excerpt":"We present cosmological constraints from the combination of DESI DR1 full-shape measurements, including for the LRG bispectrum, and DESI DR2 BAO data. The joint analysis accounts for cross-covariance using mocks, while ShapeFit compression mitigates prior volume effects that hinder beyond-$\\Lambda$CDM analyses. In $\\Lambda$CDM, the bispectrum (P+B) shifts $\\sigma_8$ up by $1.1\\sigma$ and $S_8$ by $1.2\\sigma$, reducing their uncertainties by $26\\%$ and $28\\%$, respectively. For $w_0w_a$CDM, DESI-only analyses with the bispectrum shift dark energy parameters toward $\\Lambda$CDM, staying consiste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23936","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/2606.23936/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"}