{"paper":{"title":"Exploring neutrino loss with diffuse astrophysical neutrino fluxes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Conservative energy conservation severely constrains neutrino loss in the diffuse flux observed by IceCube.","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"hep-ph","authors_text":"Alberto M. Gago, Gabriel D. Zapata, Ivan Esteban, M. C. Gonzalez-Garcia","submitted_at":"2026-05-13T18:00:01Z","abstract_excerpt":"We study the sensitivity of the diffuse high-energy neutrino flux observed in IceCube to new-physics effects resulting in an exponential flux attenuation along the trajectory, such as invisible neutrino decay or new interactions with the background encountered during propagation. We argue that, even though the sources and production redshifts of these astrophysical neutrinos are unknown, conservative energy-conservation arguments allow to severely constrain neutrino loss in most scenarios beyond the strongest existing bounds. By performing a fit to the High-Energy Starting Events from IceCube,"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"conservative energy-conservation arguments allow to severely constrain neutrino loss in most scenarios beyond the strongest existing bounds. By performing a fit to the High-Energy Starting Events from IceCube, we quantify the bounds and study their variation with the energy dependence of the attenuation, the assumed redshift distribution of the neutrino sources, and whether the attenuation affects neutrinos exclusively or not.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that conservative energy-conservation arguments can be applied to severely constrain neutrino loss despite completely unknown sources and production redshifts, combined with the choice of exponential attenuation form and specific redshift distributions in the fit.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"IceCube diffuse neutrino data constrains neutrino loss from new physics via energy conservation, yielding bounds that vary with attenuation energy dependence and source redshift assumptions while potentially affecting spectral index fits.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Conservative energy conservation severely constrains neutrino loss in the diffuse flux observed by IceCube.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"ca4ce7972dd849d48e123498ba4e5e5f9f89624f156690cc7a340b6e50db8efd"},"source":{"id":"2605.13955","kind":"arxiv","version":1},"verdict":{"id":"756b110d-305a-4907-b587-0bcf87c68439","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T02:25:28.514045Z","strongest_claim":"conservative energy-conservation arguments allow to severely constrain neutrino loss in most scenarios beyond the strongest existing bounds. By performing a fit to the High-Energy Starting Events from IceCube, we quantify the bounds and study their variation with the energy dependence of the attenuation, the assumed redshift distribution of the neutrino sources, and whether the attenuation affects neutrinos exclusively or not.","one_line_summary":"IceCube diffuse neutrino data constrains neutrino loss from new physics via energy conservation, yielding bounds that vary with attenuation energy dependence and source redshift assumptions while potentially affecting spectral index fits.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that conservative energy-conservation arguments can be applied to severely constrain neutrino loss despite completely unknown sources and production redshifts, combined with the choice of exponential attenuation form and specific redshift distributions in the fit.","pith_extraction_headline":"Conservative energy conservation severely constrains neutrino loss in the diffuse flux observed by IceCube."},"references":{"count":54,"sample":[{"doi":"","year":2011,"title":"The Astrophysics of Ultrahigh Energy Cosmic Rays","work_id":"ca7e9eeb-2b54-4580-9423-473697f0c878","ref_index":1,"cited_arxiv_id":"1101.4256","is_internal_anchor":true},{"doi":"","year":2019,"title":"Ultra-High-Energy Cosmic Rays","work_id":"30078622-6dee-47d5-a2a5-226e9eff88cf","ref_index":2,"cited_arxiv_id":"1807.09645","is_internal_anchor":true},{"doi":"","year":2024,"title":"New limits on neutrino decay from high-energy astro- physical neutrinos,","work_id":"ccc05176-d592-4cd0-b0c4-26a795bc2934","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2017,"title":"Testing decay of astrophysical neutrinos with incomplete information","work_id":"257cdfb3-ea13-4e43-bd8b-f4ec08c36126","ref_index":4,"cited_arxiv_id":"1610.02096","is_internal_anchor":true},{"doi":"","year":2016,"title":"Probing BSM Neutrino Physics with Flavor and Spectral Distortions: Prospects for Future High-Energy Neutrino Telescopes","work_id":"19245087-dc6c-4596-b194-2babf0af9826","ref_index":5,"cited_arxiv_id":"1512.07228","is_internal_anchor":true}],"resolved_work":54,"snapshot_sha256":"7564ed2a145b493c07873f3481fbe408c922f020d61f9f8383422eb53fb356a5","internal_anchors":24},"formal_canon":{"evidence_count":2,"snapshot_sha256":"7327cad3f356ee9a52dd40835eb723363f6e00d6735dd091fade83e1622abb66"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}