{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:QFL7H7T7P2XDIH3VPYOSBWAFQ6","short_pith_number":"pith:QFL7H7T7","schema_version":"1.0","canonical_sha256":"8157f3fe7f7eae341f757e1d20d8058797b210d0a7e501164f1a8d5d27be2081","source":{"kind":"arxiv","id":"2308.15240","version":3},"attestation_state":"computed","paper":{"title":"Helicity dependent cross sections for the photoproduction of $\\pi^0\\pi^{\\pm}$ pairs from quasi-free nucleons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A2 Collaboration: D. Ghosal, A. Braghieri, A. Denig, A. Fix, A. K\\\"aser, A. Lazarev, A. Neganov, A. Neiser, A. Powell, A.S. Dolzhikov, A. Thiel, A. Thomas, B. Krusche, C. Collicot, Ch. Meier, C. Mullen, D. Gurevich, D. Hornidge, D.I. Glazier, D.M. Manley, D. Paudyal, D.P. Watts, D. Werthm\\\"uller, E.J. Downie, E. Mornacchi, F. Afzal, F. Cividini, G.M. Huber, G. Reicherz, I. Gorodnov, I.I. Strakovsky, I.J.D. MacGregor, J.R.M. Annand, J. Wettig, K. Livingston, K. Spieker, L. Heijkenskj\\\"old, L. Witthauer, M. Bashkanov, M. Biroth, M. Dieterle, M. G\\\"unther, M. Korolija, M. Mocanu, M. Ostrick, M. Thiel, M. Unverzagt, M. Wolfes, N. Borisov, N. Jermann, N.K. Walford, N. Zachariou, O. Steffen, P. Achenbach, P. Drexler, P. Otte, P. Pedroni, P.P. Martel, R. Beck, R. Miskimen, S. Abt, S. Costanza, S. Fegan, S. Gardner, S. Lutterer, S. Wagner, T. Rostomyan, V.L. Kashevarov, V. Sokhoyan, W. Gradl, W.J. Briscoe, Yu.A. Usov, Z. Ahmed","submitted_at":"2023-08-29T12:00:41Z","abstract_excerpt":"Photoproduction of $\\pi^0\\pi^{\\pm}$-pairs from quasifree nucleons bound in the deuteron has been investigated to study the helicity dependence of this reaction. Measurements with a liquid deuterium target were used to extract the unpolarized cross sections for reactions on protons and neutrons. A deuterated, longitudinally polarized solid-butanol target, together with a circularly polarized photon beam, determined the double polarization observable $E$. From these results the spin-dependent cross sections $\\sigma_{1/2}$ and $\\sigma_{3/2}$, corresponding to the anti-parallel and parallel spin c"},"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":"2308.15240","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2023-08-29T12:00:41Z","cross_cats_sorted":[],"title_canon_sha256":"8a63b3a93961e489b0ec2406f4a567d8ed4688011e9499ea38fe650c84edb39f","abstract_canon_sha256":"4886e14ed3e706123e4471140ad3791cee5a54f51e341330eea0ce8ce02fdb5b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:06:33.506961Z","signature_b64":"9y8Qei155I9UqbeXr/TUtPRF7dWwBs3bdVfzY8DMbDtPFNKzRLNQ3wMGjnDqgUqhqz0NudjFRRGAE2l2CajyBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8157f3fe7f7eae341f757e1d20d8058797b210d0a7e501164f1a8d5d27be2081","last_reissued_at":"2026-07-05T07:06:33.506271Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:06:33.506271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Helicity dependent cross sections for the photoproduction of $\\pi^0\\pi^{\\pm}$ pairs from quasi-free nucleons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A2 Collaboration: D. Ghosal, A. Braghieri, A. Denig, A. Fix, A. K\\\"aser, A. Lazarev, A. Neganov, A. Neiser, A. Powell, A.S. Dolzhikov, A. Thiel, A. Thomas, B. Krusche, C. Collicot, Ch. Meier, C. Mullen, D. Gurevich, D. Hornidge, D.I. Glazier, D.M. Manley, D. Paudyal, D.P. Watts, D. Werthm\\\"uller, E.J. Downie, E. Mornacchi, F. Afzal, F. Cividini, G.M. Huber, G. Reicherz, I. Gorodnov, I.I. Strakovsky, I.J.D. MacGregor, J.R.M. Annand, J. Wettig, K. Livingston, K. Spieker, L. Heijkenskj\\\"old, L. Witthauer, M. Bashkanov, M. Biroth, M. Dieterle, M. G\\\"unther, M. Korolija, M. Mocanu, M. Ostrick, M. Thiel, M. Unverzagt, M. Wolfes, N. Borisov, N. Jermann, N.K. Walford, N. Zachariou, O. Steffen, P. Achenbach, P. Drexler, P. Otte, P. Pedroni, P.P. Martel, R. Beck, R. Miskimen, S. Abt, S. Costanza, S. Fegan, S. Gardner, S. Lutterer, S. Wagner, T. Rostomyan, V.L. Kashevarov, V. Sokhoyan, W. Gradl, W.J. Briscoe, Yu.A. Usov, Z. Ahmed","submitted_at":"2023-08-29T12:00:41Z","abstract_excerpt":"Photoproduction of $\\pi^0\\pi^{\\pm}$-pairs from quasifree nucleons bound in the deuteron has been investigated to study the helicity dependence of this reaction. Measurements with a liquid deuterium target were used to extract the unpolarized cross sections for reactions on protons and neutrons. A deuterated, longitudinally polarized solid-butanol target, together with a circularly polarized photon beam, determined the double polarization observable $E$. From these results the spin-dependent cross sections $\\sigma_{1/2}$ and $\\sigma_{3/2}$, corresponding to the anti-parallel and parallel spin c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.15240","kind":"arxiv","version":3},"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/2308.15240/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2308.15240","created_at":"2026-07-05T07:06:33.506370+00:00"},{"alias_kind":"arxiv_version","alias_value":"2308.15240v3","created_at":"2026-07-05T07:06:33.506370+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.15240","created_at":"2026-07-05T07:06:33.506370+00:00"},{"alias_kind":"pith_short_12","alias_value":"QFL7H7T7P2XD","created_at":"2026-07-05T07:06:33.506370+00:00"},{"alias_kind":"pith_short_16","alias_value":"QFL7H7T7P2XDIH3V","created_at":"2026-07-05T07:06:33.506370+00:00"},{"alias_kind":"pith_short_8","alias_value":"QFL7H7T7","created_at":"2026-07-05T07:06:33.506370+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/QFL7H7T7P2XDIH3VPYOSBWAFQ6","json":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6.json","graph_json":"https://pith.science/api/pith-number/QFL7H7T7P2XDIH3VPYOSBWAFQ6/graph.json","events_json":"https://pith.science/api/pith-number/QFL7H7T7P2XDIH3VPYOSBWAFQ6/events.json","paper":"https://pith.science/paper/QFL7H7T7"},"agent_actions":{"view_html":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6","download_json":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6.json","view_paper":"https://pith.science/paper/QFL7H7T7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2308.15240&json=true","fetch_graph":"https://pith.science/api/pith-number/QFL7H7T7P2XDIH3VPYOSBWAFQ6/graph.json","fetch_events":"https://pith.science/api/pith-number/QFL7H7T7P2XDIH3VPYOSBWAFQ6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6/action/storage_attestation","attest_author":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6/action/author_attestation","sign_citation":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6/action/citation_signature","submit_replication":"https://pith.science/pith/QFL7H7T7P2XDIH3VPYOSBWAFQ6/action/replication_record"}},"created_at":"2026-07-05T07:06:33.506370+00:00","updated_at":"2026-07-05T07:06:33.506370+00:00"}