{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:S4W5U3SOSZMPSWPYFFG5JP5DFY","short_pith_number":"pith:S4W5U3SO","canonical_record":{"source":{"id":"2501.14827","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2025-01-22T09:53:20Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"bc75a32ca58e617d9c7a47e7398392613b0b97db14768f59be221ac87b972b74","abstract_canon_sha256":"e0bd87535c3e97d3e8d43017684ac5494ba3a4799a7cba32381df4120e9e7fae"},"schema_version":"1.0"},"canonical_sha256":"972dda6e4e9658f959f8294dd4bfa32e14bea2429b3c54e926ca912dd3301b0b","source":{"kind":"arxiv","id":"2501.14827","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.14827","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"arxiv_version","alias_value":"2501.14827v1","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.14827","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"pith_short_12","alias_value":"S4W5U3SOSZMP","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"pith_short_16","alias_value":"S4W5U3SOSZMPSWPY","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"pith_short_8","alias_value":"S4W5U3SO","created_at":"2026-07-05T10:05:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:S4W5U3SOSZMPSWPYFFG5JP5DFY","target":"record","payload":{"canonical_record":{"source":{"id":"2501.14827","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2025-01-22T09:53:20Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"bc75a32ca58e617d9c7a47e7398392613b0b97db14768f59be221ac87b972b74","abstract_canon_sha256":"e0bd87535c3e97d3e8d43017684ac5494ba3a4799a7cba32381df4120e9e7fae"},"schema_version":"1.0"},"canonical_sha256":"972dda6e4e9658f959f8294dd4bfa32e14bea2429b3c54e926ca912dd3301b0b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:05:19.529481Z","signature_b64":"dwsSRI1oj49AozFl5Mw5VoegQN0PluWrc12pmOcWqtd/ElJZmjPzKLXLO6s+fGPpGUIGgwEcCcoioI6G/KtRDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"972dda6e4e9658f959f8294dd4bfa32e14bea2429b3c54e926ca912dd3301b0b","last_reissued_at":"2026-07-05T10:05:19.528990Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:05:19.528990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.14827","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:05:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nDJzI6j1tbMWekby6APsatwDeCUIS1DBrCnv7y3503XWFwV9VsMjvwc/nqmVmiH8zUN4pddT+z6Z71HF1CvODQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:10:59.621725Z"},"content_sha256":"6c2001fd4a56054b2275aa3d5fe17b00135fb87ff4d5062f5a7c600daa2ee796","schema_version":"1.0","event_id":"sha256:6c2001fd4a56054b2275aa3d5fe17b00135fb87ff4d5062f5a7c600daa2ee796"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:S4W5U3SOSZMPSWPYFFG5JP5DFY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Proposal of the KOTO II experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"Abhishek Iyer, Adam Tomczak, Alberto Gianoli, Alexander Glazov, Angela Romano, Antonella Antonelli, Armine Rostomyan, Artur Shaikhiev, Babette D\\H{o}brich, Benjamin Stillwell, Chieh Lin, Chong Kim, Claire Prouve, Cristina Lazzeroni, Daiki Ogawa, Daniele Rinaldi, Dan Protopopescu, David Hutchcroft, Diego Mart\\'inez Santos, Emile Augustine, Eun-Joo Kim, Evgueni Goudzovski, Farvah Mahmoudi, Francesco Brizioli, Gabriella Carini, GeiYoub Lim, Giancarlo D'Ambrosio, Gianluca Lamanna, Giuseppina Anzivino, Guang Yang, Hajime Nanjo, Hiroaki Watanabe, Ivano Sarra, Jack Sanders, Jacopo Pinzino, Jianming Bian, Joel Swallow, John Bourke Dainton, John Fry, John Wendel, Joseph Redeker, Jung Keun Ahn, Karim Massri, Katsushige Kotera, Keita Ono, Koji Shiomi, Laura Bandiera, Letizia Peruzzo, Luigi Montalto, Mai Katayama, Marco Romagnoni, Marco Sozzi, Maresa Wynd, Mario Gonzalez, Martin Gorbahn, Matthew Moulson, Matthew Needham, Mattia Soldani, Mei Homma, Michal Kreps, Monica Pepe, Rainer Wanke, Roger William Lewis Jones, Ryota Shiraishi, Samet Lezki, Sanghoon Lim, Siavash Neshatpour, Stefano De Capua, Tadashi Nomura, Takeshi Komatsubara, Thomas Reddel, Tom\\'a\\v{s} Husek, Tong Wu, Toru Matsumura, Veronika Chobanova, Victoria Martin, Yasuhisa Tajima, Yau Wah, Yee B. Hsiung, Yi-Ting Su, Yu-Chen Tung, Yuto Kawata","submitted_at":"2025-01-22T09:53:20Z","abstract_excerpt":"The KOTO II experiment is proposed to measure the branching ratio of the decay $K_L\\to\\pi^0\\nu\\bar{\\nu}$ at J-PARC. With a beamline to extract long-lived neutral kaons at 5 degrees from a production target, the single event sensitivity of the decay is $8.5\\times 10^{-13}$, which is much smaller than the Standard Model prediction $3\\times 10^{-11}$. This allows searches for new physics beyond the Standard Model and the first discovery of the decay with a significance exceeding $5\\sigma$. As the only experiment proposed in the world dedicated to rare kaon decays, KOTO II will be indispensable in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14827","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2501.14827/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:05:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xs7LhiD+7Tl5xgnOrq95kiro2mCZZGJwu4FieR5XUsG9D1AfYAveiG1UsU/2CFBFjnO4Xdozl4CFWOayG43ECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:10:59.622109Z"},"content_sha256":"5b09df51f1bac9ccdee8044677d3944adda3ac88d2c5de3cdb52a5b07e4708e3","schema_version":"1.0","event_id":"sha256:5b09df51f1bac9ccdee8044677d3944adda3ac88d2c5de3cdb52a5b07e4708e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY/bundle.json","state_url":"https://pith.science/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T07:10:59Z","links":{"resolver":"https://pith.science/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY","bundle":"https://pith.science/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY/bundle.json","state":"https://pith.science/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S4W5U3SOSZMPSWPYFFG5JP5DFY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:S4W5U3SOSZMPSWPYFFG5JP5DFY","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e0bd87535c3e97d3e8d43017684ac5494ba3a4799a7cba32381df4120e9e7fae","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2025-01-22T09:53:20Z","title_canon_sha256":"bc75a32ca58e617d9c7a47e7398392613b0b97db14768f59be221ac87b972b74"},"schema_version":"1.0","source":{"id":"2501.14827","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.14827","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"arxiv_version","alias_value":"2501.14827v1","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.14827","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"pith_short_12","alias_value":"S4W5U3SOSZMP","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"pith_short_16","alias_value":"S4W5U3SOSZMPSWPY","created_at":"2026-07-05T10:05:19Z"},{"alias_kind":"pith_short_8","alias_value":"S4W5U3SO","created_at":"2026-07-05T10:05:19Z"}],"graph_snapshots":[{"event_id":"sha256:5b09df51f1bac9ccdee8044677d3944adda3ac88d2c5de3cdb52a5b07e4708e3","target":"graph","created_at":"2026-07-05T10:05:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2501.14827/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The KOTO II experiment is proposed to measure the branching ratio of the decay $K_L\\to\\pi^0\\nu\\bar{\\nu}$ at J-PARC. With a beamline to extract long-lived neutral kaons at 5 degrees from a production target, the single event sensitivity of the decay is $8.5\\times 10^{-13}$, which is much smaller than the Standard Model prediction $3\\times 10^{-11}$. This allows searches for new physics beyond the Standard Model and the first discovery of the decay with a significance exceeding $5\\sigma$. As the only experiment proposed in the world dedicated to rare kaon decays, KOTO II will be indispensable in","authors_text":"Abhishek Iyer, Adam Tomczak, Alberto Gianoli, Alexander Glazov, Angela Romano, Antonella Antonelli, Armine Rostomyan, Artur Shaikhiev, Babette D\\H{o}brich, Benjamin Stillwell, Chieh Lin, Chong Kim, Claire Prouve, Cristina Lazzeroni, Daiki Ogawa, Daniele Rinaldi, Dan Protopopescu, David Hutchcroft, Diego Mart\\'inez Santos, Emile Augustine, Eun-Joo Kim, Evgueni Goudzovski, Farvah Mahmoudi, Francesco Brizioli, Gabriella Carini, GeiYoub Lim, Giancarlo D'Ambrosio, Gianluca Lamanna, Giuseppina Anzivino, Guang Yang, Hajime Nanjo, Hiroaki Watanabe, Ivano Sarra, Jack Sanders, Jacopo Pinzino, Jianming Bian, Joel Swallow, John Bourke Dainton, John Fry, John Wendel, Joseph Redeker, Jung Keun Ahn, Karim Massri, Katsushige Kotera, Keita Ono, Koji Shiomi, Laura Bandiera, Letizia Peruzzo, Luigi Montalto, Mai Katayama, Marco Romagnoni, Marco Sozzi, Maresa Wynd, Mario Gonzalez, Martin Gorbahn, Matthew Moulson, Matthew Needham, Mattia Soldani, Mei Homma, Michal Kreps, Monica Pepe, Rainer Wanke, Roger William Lewis Jones, Ryota Shiraishi, Samet Lezki, Sanghoon Lim, Siavash Neshatpour, Stefano De Capua, Tadashi Nomura, Takeshi Komatsubara, Thomas Reddel, Tom\\'a\\v{s} Husek, Tong Wu, Toru Matsumura, Veronika Chobanova, Victoria Martin, Yasuhisa Tajima, Yau Wah, Yee B. Hsiung, Yi-Ting Su, Yu-Chen Tung, Yuto Kawata","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2025-01-22T09:53:20Z","title":"Proposal of the KOTO II experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14827","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6c2001fd4a56054b2275aa3d5fe17b00135fb87ff4d5062f5a7c600daa2ee796","target":"record","created_at":"2026-07-05T10:05:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e0bd87535c3e97d3e8d43017684ac5494ba3a4799a7cba32381df4120e9e7fae","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2025-01-22T09:53:20Z","title_canon_sha256":"bc75a32ca58e617d9c7a47e7398392613b0b97db14768f59be221ac87b972b74"},"schema_version":"1.0","source":{"id":"2501.14827","kind":"arxiv","version":1}},"canonical_sha256":"972dda6e4e9658f959f8294dd4bfa32e14bea2429b3c54e926ca912dd3301b0b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"972dda6e4e9658f959f8294dd4bfa32e14bea2429b3c54e926ca912dd3301b0b","first_computed_at":"2026-07-05T10:05:19.528990Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:05:19.528990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dwsSRI1oj49AozFl5Mw5VoegQN0PluWrc12pmOcWqtd/ElJZmjPzKLXLO6s+fGPpGUIGgwEcCcoioI6G/KtRDA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:05:19.529481Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.14827","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c2001fd4a56054b2275aa3d5fe17b00135fb87ff4d5062f5a7c600daa2ee796","sha256:5b09df51f1bac9ccdee8044677d3944adda3ac88d2c5de3cdb52a5b07e4708e3"],"state_sha256":"231e7fee35799876263bce6f34e684978513a9be33ebc1e6721fbb73ebe0fac8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UtBaSo73KqdY3fa1d4cakYmNcMDsU0RnQidlETn1vCnNPy0F4Nuk3uJGzKCF0kE6lNhVUldtLamkpvpitOuOBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:10:59.624148Z","bundle_sha256":"3ddaa9b0141e244d74d8762be8b82f94a2896550935a06d40b97e2bf261ee800"}}