{"paper":{"title":"Constraining the phase shift of relativistic species in DESI BAOs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Aaron Meisner, Abb\\'e M. Whitford, Alejandro P\\'erez-Fern\\'andez, Arnaud de Mattia, Axel de la Macorra, Benjamin Alan Weaver, Cullan Howlett, David Brooks, Davide Bianchi, David Kirkby, David Sprayberry, Enrique Gazta\\~naga, Etienne Burtin, Eusebio Sanchez, Francisco Prada, Gaston Gutierrez, Graziano Rossi, Gregory Tarl\\'e, Hugo Rivera-Morales, Hu Zou, Ignasi P\\'erez-R\\`afols, Jaime E. Forero-Romero, Laurent Le Guillou, Mariana Vargas-Maga\\~na, Martin Landriau, Michael Schubnell, Pauline Zarrouk, Peter Doel, Ramon Miquel, Robert Kehoe, Satya Gontcho A Gontcho, S\\'ebastien Fromenteau, Sergey Koposov, Simone Ferraro, Stephanie Juneau, Steven Ahlen, Tamara M. Davis, Theodore Kisner, Todd Claybaugh","submitted_at":"2024-12-08T16:35:20Z","abstract_excerpt":"In the early Universe, neutrinos decouple quickly from the primordial plasma and propagate without further interactions. The impact of free-streaming neutrinos is to create a temporal shift in the gravitational potential that impacts the acoustic waves known as baryon acoustic oscillations (BAOs), resulting in a non-linear spatial shift in the Fourier-space BAO signal. In this work, we make use of and extend upon an existing methodology to measure the phase shift amplitude $\\beta_{\\phi}$ and apply it to the DESI Data Release 1 (DR1) BAOs with an anisotropic BAO fitting pipeline. We validate th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.05990","kind":"arxiv","version":2},"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/2412.05990/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"}