{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:2PISSVIALSSQDFZVDXSLKFZEZH","short_pith_number":"pith:2PISSVIA","schema_version":"1.0","canonical_sha256":"d3d12955005ca50197351de4b51724c9c862ebbcd203bce15f01ad305d223b64","source":{"kind":"arxiv","id":"1803.01574","version":1},"attestation_state":"computed","paper":{"title":"Loop Effects in Direct Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Giorgio Busoni, Isaac W. Sanderson, Nicole F. Bell","submitted_at":"2018-03-05T09:48:20Z","abstract_excerpt":"We consider loop level contributions to dark matter scattering off nucleons in cases where the spin independent scattering cross section is absent or suppressed at tree level. In the case of a pseudoscalar interaction, for which the tree level cross section is both spin-dependent and suppressed by 4 powers of the exchanged momentum, we show that loop diagrams give rise to a non- zero spin independent cross section. Importantly, if the pseudoscalar interaction is formulated using a gauge invariant framework, loop effects generate an effective $\\bar{\\chi}\\chi h$ vertex and result in a scattering"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1803.01574","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-05T09:48:20Z","cross_cats_sorted":[],"title_canon_sha256":"bac3ae84b45691152de9d8ac0789c0ca8f2c99e2bbf778bf3bf9e333009adf0c","abstract_canon_sha256":"81b1f31c8ad6ba719d4eaba1917619a08fa685839ed2792750c2440ea2966118"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:40.753137Z","signature_b64":"1ZPySeKxrEFdEGWyPv8n0H3nsTH2L2VyGCFYesPfGnCsU90WIBalpPBEIh1oMMPtDiLFX6jhpqin0dbY013AAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3d12955005ca50197351de4b51724c9c862ebbcd203bce15f01ad305d223b64","last_reissued_at":"2026-05-18T00:07:40.752541Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:40.752541Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Loop Effects in Direct Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Giorgio Busoni, Isaac W. Sanderson, Nicole F. Bell","submitted_at":"2018-03-05T09:48:20Z","abstract_excerpt":"We consider loop level contributions to dark matter scattering off nucleons in cases where the spin independent scattering cross section is absent or suppressed at tree level. In the case of a pseudoscalar interaction, for which the tree level cross section is both spin-dependent and suppressed by 4 powers of the exchanged momentum, we show that loop diagrams give rise to a non- zero spin independent cross section. Importantly, if the pseudoscalar interaction is formulated using a gauge invariant framework, loop effects generate an effective $\\bar{\\chi}\\chi h$ vertex and result in a scattering"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.01574","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1803.01574","created_at":"2026-05-18T00:07:40.752636+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.01574v1","created_at":"2026-05-18T00:07:40.752636+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.01574","created_at":"2026-05-18T00:07:40.752636+00:00"},{"alias_kind":"pith_short_12","alias_value":"2PISSVIALSSQ","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"2PISSVIALSSQDFZV","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"2PISSVIA","created_at":"2026-05-18T12:32:02.567920+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH","json":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH.json","graph_json":"https://pith.science/api/pith-number/2PISSVIALSSQDFZVDXSLKFZEZH/graph.json","events_json":"https://pith.science/api/pith-number/2PISSVIALSSQDFZVDXSLKFZEZH/events.json","paper":"https://pith.science/paper/2PISSVIA"},"agent_actions":{"view_html":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH","download_json":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH.json","view_paper":"https://pith.science/paper/2PISSVIA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.01574&json=true","fetch_graph":"https://pith.science/api/pith-number/2PISSVIALSSQDFZVDXSLKFZEZH/graph.json","fetch_events":"https://pith.science/api/pith-number/2PISSVIALSSQDFZVDXSLKFZEZH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH/action/storage_attestation","attest_author":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH/action/author_attestation","sign_citation":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH/action/citation_signature","submit_replication":"https://pith.science/pith/2PISSVIALSSQDFZVDXSLKFZEZH/action/replication_record"}},"created_at":"2026-05-18T00:07:40.752636+00:00","updated_at":"2026-05-18T00:07:40.752636+00:00"}