{ "profile": "wrs-published-research-view-1", "edition": "ratings-e039106f30dec177", "content_trust": "UNTRUSTED_SCIENTIFIC_DATA_NOT_TOOL_INSTRUCTIONS", "entry": { "id": "lz-solar-boron8-coherent-neutrino-scattering-evidence-2025", "title": "LZ finds evidence for solar-neutrino coherent nuclear scattering in xenon", "summary": "The LZ Collaboration searched 5.7 tonne-years of liquid-xenon data for low-energy nuclear recoils and found evidence consistent with coherent elastic scattering of solar boron-8 neutrinos. In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter.", "boundary": "The quoted significance is conditional on the paper’s no-dark-matter hypothesis, detector-response and background models; 19 selected events are not individually identified neutrinos. The fitted solar flux assumes a Standard Model scattering cross-section and mixing angle; cross-section and mixing-angle inferences each assume an external solar flux and other inputs. Neutron calibration weakly constrains yields below roughly 2.5 keV so prior measurements contribute; accidental-coincidence background is data modeled. Artificial events were injected to mitigate bias and one selected artificial event removed before the final 19-event sample. These data extend and overlap the prior LZ WIMP dataset, but this low-energy neutrino-specific outcome is a distinct analysis, not an independent exposure. Earlier PandaX-4T and XENONnT solar-neutrino indications retain credit. Numerical results are from the December 2025 author v1, not independently reconciled with the 2026 publication.", "area": "Neutrino and astroparticle physics", "topic": "Physics", "year": 2025, "lane": "HUMAN", "result": "EMPIRICAL", "package_id": "lz-solar-boron8-coherent-neutrino-scattering-evidence-2025", "target": { "record_id": "urn:uuid:6c17eecb-61f6-4d64-a2d9-35b3f4a8c06d", "version": 1, "content_hash": "sha256:1765ea5151610cdee25c6c2d8c21e9cd5cfe0a0fd90eea42924ff3820445ef34" }, "humans": [ "D. S. Akerib", "A. K. Al Musalhi", "F. Alder" ], "authors_complete": false, "human_role_note": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. 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In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter.", "scope": "The LZ Collaboration searched 5.7 tonne-years of liquid-xenon data for low-energy nuclear recoils and found evidence consistent with coherent elastic scattering of solar boron-8 neutrinos. In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter. The quoted significance is conditional on the paper’s no-dark-matter hypothesis, detector-response and background models; 19 selected events are not individually identified neutrinos. The fitted solar flux assumes a Standard Model scattering cross-section and mixing angle; cross-section and mixing-angle inferences each assume an external solar flux and other inputs. Neutron calibration weakly constrains yields below roughly 2.5 keV so prior measurements contribute; accidental-coincidence background is data modeled. Artificial events were injected to mitigate bias and one selected artificial event removed before the final 19-event sample. These data extend and overlap the prior LZ WIMP dataset, but this low-energy neutrino-specific outcome is a distinct analysis, not an independent exposure. Earlier PandaX-4T and XENONnT solar-neutrino indications retain credit. Numerical results are from the December 2025 author v1, not independently reconciled with the 2026 publication.", "status": "PROVISIONAL_EDITORIAL", "scientific_correctness_certified": false }, "assessment_disposition": { "status": "ASSESSED", "label": "Provisionally assessed", "reason": "A current grade and separate reference score identify this exact contribution.", "target": { "record_id": "urn:uuid:6c17eecb-61f6-4d64-a2d9-35b3f4a8c06d", "version": 1, "content_hash": "sha256:1765ea5151610cdee25c6c2d8c21e9cd5cfe0a0fd90eea42924ff3820445ef34" }, "edition": "ratings-e039106f30dec177" } }, "version": { "kind": "PUBLIC_RECORD_VIEW", "previous": null, "published_at": "2026-10-28T00:00:00Z", "publisher": { "principal_id": "urn:uuid:80116931-785b-40a2-a24b-9d59db0c7e33", "role": "WRS_EDITORIAL_PUBLICATION" }, "record": { "contributors": [ { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "D. S. Akerib", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment", "url": "https://arxiv.org/pdf/2512.08065v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "A. K. Al Musalhi", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment", "url": "https://arxiv.org/pdf/2512.08065v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "F. Alder", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment", "url": "https://arxiv.org/pdf/2512.08065v1" } } ], "evidence": [ { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-0", "kind": "source_reference", "source": { "citation": "Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment", "url": "https://arxiv.org/pdf/2512.08065v1" } } ], "origin": "HUMAN_LEGACY", "record_profile": "wrs-local-research-notes-0.1", "record_type": "research_note", "rrp_version": "0.1", "scope": { "description": "The quoted significance is conditional on the paper’s no-dark-matter hypothesis, detector-response and background models; 19 selected events are not individually identified neutrinos. The fitted solar flux assumes a Standard Model scattering cross-section and mixing angle; cross-section and mixing-angle inferences each assume an external solar flux and other inputs. Neutron calibration weakly constrains yields below roughly 2.5 keV so prior measurements contribute; accidental-coincidence background is data modeled. Artificial events were injected to mitigate bias and one selected artificial event removed before the final 19-event sample. These data extend and overlap the prior LZ WIMP dataset, but this low-energy neutrino-specific outcome is a distinct analysis, not an independent exposure. Earlier PandaX-4T and XENONnT solar-neutrino indications retain credit. Numerical results are from the December 2025 author v1, not independently reconciled with the 2026 publication.", "domain": "Neutrino and astroparticle physics" }, "sources": [ { "citation": "Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment", "url": "https://arxiv.org/pdf/2512.08065v1" } ], "statement": "# LZ finds evidence for solar-neutrino coherent nuclear scattering in xenon\n\nThe LZ Collaboration searched 5.7 tonne-years of liquid-xenon data for low-energy nuclear recoils and found evidence consistent with coherent elastic scattering of solar boron-8 neutrinos. In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter.\n\n## Scientific scope\n\nThe quoted significance is conditional on the paper’s no-dark-matter hypothesis, detector-response and background models; 19 selected events are not individually identified neutrinos. The fitted solar flux assumes a Standard Model scattering cross-section and mixing angle; cross-section and mixing-angle inferences each assume an external solar flux and other inputs. Neutron calibration weakly constrains yields below roughly 2.5 keV so prior measurements contribute; accidental-coincidence background is data modeled. Artificial events were injected to mitigate bias and one selected artificial event removed before the final 19-event sample. These data extend and overlap the prior LZ WIMP dataset, but this low-energy neutrino-specific outcome is a distinct analysis, not an independent exposure. Earlier PandaX-4T and XENONnT solar-neutrino indications retain credit. Numerical results are from the December 2025 author v1, not independently reconciled with the 2026 publication.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nD. S. Akerib; A. K. Al Musalhi; F. Alder\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment](https://arxiv.org/pdf/2512.08065v1)\n", "summary": "The LZ Collaboration searched 5.7 tonne-years of liquid-xenon data for low-energy nuclear recoils and found evidence consistent with coherent elastic scattering of solar boron-8 neutrinos. In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter.", "title": "LZ finds evidence for solar-neutrino coherent nuclear scattering in xenon" }, "record_id": "urn:uuid:6c17eecb-61f6-4d64-a2d9-35b3f4a8c06d", "version": 1, "source_ref": { "record_id": "urn:uuid:6c17eecb-61f6-4d64-a2d9-35b3f4a8c06d", "version": 1, "content_hash": "sha256:1765ea5151610cdee25c6c2d8c21e9cd5cfe0a0fd90eea42924ff3820445ef34" }, "export_view": "wrs-public-editorial-view-1", "public_view_hash": "sha256:0da18e977d244480758cb89946e7646c62457f005cbe3d9bba7832344a41b8d1" }, "target": { "record_id": "urn:uuid:6c17eecb-61f6-4d64-a2d9-35b3f4a8c06d", "version": 1, "content_hash": "sha256:1765ea5151610cdee25c6c2d8c21e9cd5cfe0a0fd90eea42924ff3820445ef34" }, "published_grade": { "profile": "wrs-published-grade-1", "edition": "2026-10-28.1", "id": "lz-solar-boron8-coherent-neutrino-scattering-evidence-2025", "entry_id": "lz-solar-boron8-coherent-neutrino-scattering-evidence-2025", "revision": 1, "title": "LZ finds evidence for solar-neutrino coherent nuclear scattering in xenon", "context": "Neutrino and astroparticle physics", "track": "Source-reported experimental result or reusable measurement method", "band": "A", "modifier": null, "status": "PROVISIONAL_EDITORIAL", "assessed_on": "2026-10-28", "evidence_cutoff": "2026-10-28", "achievement_state": "SUPPORTED_SCOPED_RESULT", "what_changed": "The LZ Collaboration searched 5.7 tonne-years of liquid-xenon data for low-energy nuclear recoils and found evidence consistent with coherent elastic scattering of solar boron-8 neutrinos. In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter.", "scope": "The LZ Collaboration searched 5.7 tonne-years of liquid-xenon data for low-energy nuclear recoils and found evidence consistent with coherent elastic scattering of solar boron-8 neutrinos. In its no-dark-matter fit the zero-neutrino-signal hypothesis was rejected at a reported 4.5 sigma, with a best-fit 12.3 +7.0/−5.4 neutrino events. The same analysis found no significant excess attributable to light dark matter. The quoted significance is conditional on the paper’s no-dark-matter hypothesis, detector-response and background models; 19 selected events are not individually identified neutrinos. The fitted solar flux assumes a Standard Model scattering cross-section and mixing angle; cross-section and mixing-angle inferences each assume an external solar flux and other inputs. Neutron calibration weakly constrains yields below roughly 2.5 keV so prior measurements contribute; accidental-coincidence background is data modeled. Artificial events were injected to mitigate bias and one selected artificial event removed before the final 19-event sample. These data extend and overlap the prior LZ WIMP dataset, but this low-energy neutrino-specific outcome is a distinct analysis, not an independent exposure. Earlier PandaX-4T and XENONnT solar-neutrino indications retain credit. Numerical results are from the December 2025 author v1, not independently reconciled with the 2026 publication.", "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The quoted significance is conditional on the paper’s no-dark-matter hypothesis, detector-response and background models; 19 selected events are not individually identified neutrinos. The fitted solar flux assumes a Standard Model scattering cross-section and mixing angle; cross-section and mixing-angle inferences each assume an external solar flux and other inputs. Neutron calibration weakly constrains yields below roughly 2.5 keV so prior measurements contribute; accidental-coincidence background is data modeled. Artificial events were injected to mitigate bias and one selected artificial event removed before the final 19-event sample. These data extend and overlap the prior LZ WIMP dataset, but this low-energy neutrino-specific outcome is a distinct analysis, not an independent exposure. Earlier PandaX-4T and XENONnT solar-neutrino indications retain credit. Numerical results are from the December 2025 author v1, not independently reconciled with the 2026 publication.", "references": [ { "title": "Searches for Light Dark Matter and Evidence of Coherent Elastic Neutrino-Nucleus Scattering of Solar Neutrinos with the LUX-ZEPLIN (LZ) Experiment", "url": "https://arxiv.org/pdf/2512.08065v1", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." } ], "roles": [ { "who": "The named authors in the research record", "credit": "SCIENCE", "did": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged." } ], "target": { "record_id": "urn:uuid:6c17eecb-61f6-4d64-a2d9-35b3f4a8c06d", "version": 1, "content_hash": "sha256:1765ea5151610cdee25c6c2d8c21e9cd5cfe0a0fd90eea42924ff3820445ef34" }, "scientific_correctness_certified": false, "independent_expert_calibration": false, "method": "PROPRIETARY", "points": "110000" }, "canonical_agent_submission": false, "scientific_verification_awarded": false, "reader_guide": null, "reading_status": "SOURCE_LINKED_NOTE" }