{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NQQ7GSLTNK6ZN3P2TTE2LHCXU7","short_pith_number":"pith:NQQ7GSLT","canonical_record":{"source":{"id":"2605.15717","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-05-15T08:09:53Z","cross_cats_sorted":["hep-ph","nucl-ex"],"title_canon_sha256":"f3958ee400174e22a0dea6ef52f36ca80cabcf9cddd8a1b8432e66a51cdcabc3","abstract_canon_sha256":"f3b4876db4a54bbdbdb9c0af58b8359a73cfcb5fd41a88d8cf2ffbe36a38d50a"},"schema_version":"1.0"},"canonical_sha256":"6c21f349736abd96edfa9cc9a59c57a7ea2abb9ca83dcca6619c47e90162e5c7","source":{"kind":"arxiv","id":"2605.15717","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.15717","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"arxiv_version","alias_value":"2605.15717v1","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.15717","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"pith_short_12","alias_value":"NQQ7GSLTNK6Z","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"pith_short_16","alias_value":"NQQ7GSLTNK6ZN3P2","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"pith_short_8","alias_value":"NQQ7GSLT","created_at":"2026-05-20T00:01:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NQQ7GSLTNK6ZN3P2TTE2LHCXU7","target":"record","payload":{"canonical_record":{"source":{"id":"2605.15717","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-05-15T08:09:53Z","cross_cats_sorted":["hep-ph","nucl-ex"],"title_canon_sha256":"f3958ee400174e22a0dea6ef52f36ca80cabcf9cddd8a1b8432e66a51cdcabc3","abstract_canon_sha256":"f3b4876db4a54bbdbdb9c0af58b8359a73cfcb5fd41a88d8cf2ffbe36a38d50a"},"schema_version":"1.0"},"canonical_sha256":"6c21f349736abd96edfa9cc9a59c57a7ea2abb9ca83dcca6619c47e90162e5c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:01:14.423100Z","signature_b64":"yOUWnMtHEoXEYJPei5dhS4lH8DS291DvLAH1rxlM4rCFZ3O/vskBgWRNtwO+4C02wtxCXuOBw7pKtdYJxxVWDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c21f349736abd96edfa9cc9a59c57a7ea2abb9ca83dcca6619c47e90162e5c7","last_reissued_at":"2026-05-20T00:01:14.422129Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:01:14.422129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.15717","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":"2026-05-20T00:01:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GkEw2aPsuzdSyqPD4aZR0GvzZFcGKQtu6+OLhMnVM7/7qr+q8pQVRvbPhjMdnFREhA8WBdrt6bAy3g0M3ks/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T09:02:32.955277Z"},"content_sha256":"444737d186ccbae2f71b90a45fbee973b872b728d315db8d430fa56e908e5adf","schema_version":"1.0","event_id":"sha256:444737d186ccbae2f71b90a45fbee973b872b728d315db8d430fa56e908e5adf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NQQ7GSLTNK6ZN3P2TTE2LHCXU7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pion emission source shape in UrQMD Au+Au collisions at STAR energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"UrQMD simulations of Au+Au collisions show pion source radii increasing with collision energy while decreasing with transverse mass.","cross_cats":["hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Daniel Kincses, Mate Csanad, Matyas Molnar","submitted_at":"2026-05-15T08:09:53Z","abstract_excerpt":"Femtoscopic measurements of two-pion Bose--Einstein correlations have established that particle-emitting sources in heavy-ion collisions are well described by L\\'evy $\\alpha$-stable distributions, motivating systematic studies across a wide range of collision energies. In this work, we present a three-dimensional femtoscopic analysis of pion pairs in Au+Au collisions simulated with the UrQMD model for collision energies $\\sqrt{s_{NN}}=3$--$27\\,\\mathrm{GeV}$, taking the RHIC BES-II range of collider and fixed target experiment energies for reference. Using L\\'evy-type source parameterisations, "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We find that R_out,side,long all decrease with increasing m_T and increase with collision energy, consistent with collective expansion, R_long showing the strongest and R_side the weakest energy dependence. The Levy index alpha decreases with collision energy, with a larger m_T-dependence towards higher energies.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The UrQMD transport model produces a pion emission source whose correlation functions are accurately captured by three-dimensional Levy parameterizations without additional contributions from a QCD phase transition or other unmodeled effects.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"UrQMD simulations show pion source radii increasing with collision energy and decreasing with transverse mass, with the Levy index alpha falling at higher energies.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"UrQMD simulations of Au+Au collisions show pion source radii increasing with collision energy while decreasing with transverse mass.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"48dc5403774458d042b5b1cc2eb7b44d213dfaca16c78fd9b339c7c5c86fda6a"},"source":{"id":"2605.15717","kind":"arxiv","version":1},"verdict":{"id":"24c5158c-0b48-4b0a-bdf8-2464bc948335","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T19:08:58.368774Z","strongest_claim":"We find that R_out,side,long all decrease with increasing m_T and increase with collision energy, consistent with collective expansion, R_long showing the strongest and R_side the weakest energy dependence. The Levy index alpha decreases with collision energy, with a larger m_T-dependence towards higher energies.","one_line_summary":"UrQMD simulations show pion source radii increasing with collision energy and decreasing with transverse mass, with the Levy index alpha falling at higher energies.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The UrQMD transport model produces a pion emission source whose correlation functions are accurately captured by three-dimensional Levy parameterizations without additional contributions from a QCD phase transition or other unmodeled effects.","pith_extraction_headline":"UrQMD simulations of Au+Au collisions show pion source radii increasing with collision energy while decreasing with transverse mass."},"integrity":{"clean":false,"summary":{"advisory":1,"critical":0,"by_detector":{"doi_compliance":{"total":1,"advisory":1,"critical":0,"informational":0}},"informational":0},"endpoint":"/pith/2605.15717/integrity.json","findings":[{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1142/97898112384060023) was visible in the surrounding text but could not be confirmed against doi.org as printed.","detector":"doi_compliance","severity":"advisory","ref_index":5,"audited_at":"2026-05-19T19:21:29.163467Z","detected_doi":"10.1142/97898112384060023","finding_type":"recoverable_identifier","verdict_class":"incontrovertible","detected_arxiv_id":null}],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-19T19:33:25.748658Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T19:31:19.118431Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T19:21:29.163467Z","status":"completed","version":"1.0.0","findings_count":1},{"name":"claim_evidence","ran_at":"2026-05-19T17:21:56.012594Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"a54bd7524ba5681fbed49bedaca2ef087fc0b0e60bd70806190247fca2239dca"},"references":{"count":48,"sample":[{"doi":"","year":2021,"title":"AAPPS Bulletin31(1), 12 (2021)","work_id":"de5926df-c2d6-49a2-bacd-45c697573799","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1959,"title":"Physical Review Letters3(4), 181 (1959)","work_id":"39c0ecfc-2a77-4b0d-9ae2-0398b1957885","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1959,"title":"Lawrence Berkeley National LaboratoryLBNL Report LBL-19417.(1985)","work_id":"fb5cdca3-5361-4f2d-b83b-1f851fe31cb3","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1990,"title":"In: International Workshop on Correla- tions and Multiparticle Production (1990)","work_id":"919a4412-b00d-43d0-bee4-1aca93317eb0","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1142/9789811238406","year":2021,"title":"In: Gribov-90 Memorial Volume, pp","work_id":"2156ff3c-3352-42de-9dfa-b5786d048a8c","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":48,"snapshot_sha256":"27d8431b22906607e2aef888b7745850ca2197cd7b211d24e574bdc0380b8763","internal_anchors":7},"formal_canon":{"evidence_count":2,"snapshot_sha256":"c75e27ae0d70767c2c5194b5b1154bd56b7449ce260a23fb66a6847d994a48d5"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":"24c5158c-0b48-4b0a-bdf8-2464bc948335"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-20T00:01:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bI2rqXyXohwk326EJYn8xyaEavjIpfu3m2hONqViNORcZw0bypLitni7cZs7bREnedvg5E0oRYcJTR3TTinmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T09:02:32.956410Z"},"content_sha256":"9a093cffa7957663202a16419ad46fe81fa4a31cafea211090670a61c658d5a9","schema_version":"1.0","event_id":"sha256:9a093cffa7957663202a16419ad46fe81fa4a31cafea211090670a61c658d5a9"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:NQQ7GSLTNK6ZN3P2TTE2LHCXU7","target":"integrity","payload":{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1142/97898112384060023) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"Csan´ ad, M., Jakov´ ac, A., L¨ ok¨ os, S., Mukherjee, A., Tripathy, S.K.: Multi-particle quantum-statistical correlation-functions in a Hubble-expanding hadron gas. In: Gribov-90 Memorial Volume, pp. 261–273. World Scientific, Singapore (2","arxiv_id":"2605.15717","detector":"doi_compliance","evidence":{"ref_index":5,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"Csan´ ad, M., Jakov´ ac, A., L¨ ok¨ os, S., Mukherjee, A., Tripathy, S.K.: Multi-particle quantum-statistical correlation-functions in a Hubble-expanding hadron gas. In: Gribov-90 Memorial Volume, pp. 261–273. World Scientific, Singapore (2","reconstructed_doi":"10.1142/97898112384060023"},"severity":"advisory","ref_index":5,"audited_at":"2026-05-19T19:21:29.163467Z","event_type":"pith.integrity.v1","detected_doi":"10.1142/97898112384060023","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"885f550af665c157ac7de295a4beeb127f5bdae8b2cace7522c1ecb0b3333e9c","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":2692,"payload_sha256":"dfe8ec0dccde0e3d07253b1cb7d82039dd94272856c89f8d7152fac5cd1502a9","signature_b64":"jClB726NluZxcsWVuBi2nUXuxKqK1tx/lEozdXoM9ysjSBZr84YFiaQpTEdrVuLMUfDkqTj4K8CpDkRrratADA==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-19T19:22:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c1+OkIAKxhguNDP5n8i1mBZF80a6fqfOgs+wKZNg5cYAZyhzRLYDwqMiqumKNYG2cR0y6Ct8zXPAuMumBWvFDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T09:02:32.957837Z"},"content_sha256":"0da64780ab2330a410454022d8a5545b284a13b69c7c6031b69b82721dcd2769","schema_version":"1.0","event_id":"sha256:0da64780ab2330a410454022d8a5545b284a13b69c7c6031b69b82721dcd2769"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7/bundle.json","state_url":"https://pith.science/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7/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":"2026-05-22T09:02:32Z","links":{"resolver":"https://pith.science/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7","bundle":"https://pith.science/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7/bundle.json","state":"https://pith.science/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NQQ7GSLTNK6ZN3P2TTE2LHCXU7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NQQ7GSLTNK6ZN3P2TTE2LHCXU7","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"f3b4876db4a54bbdbdb9c0af58b8359a73cfcb5fd41a88d8cf2ffbe36a38d50a","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-05-15T08:09:53Z","title_canon_sha256":"f3958ee400174e22a0dea6ef52f36ca80cabcf9cddd8a1b8432e66a51cdcabc3"},"schema_version":"1.0","source":{"id":"2605.15717","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.15717","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"arxiv_version","alias_value":"2605.15717v1","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.15717","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"pith_short_12","alias_value":"NQQ7GSLTNK6Z","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"pith_short_16","alias_value":"NQQ7GSLTNK6ZN3P2","created_at":"2026-05-20T00:01:14Z"},{"alias_kind":"pith_short_8","alias_value":"NQQ7GSLT","created_at":"2026-05-20T00:01:14Z"}],"graph_snapshots":[{"event_id":"sha256:9a093cffa7957663202a16419ad46fe81fa4a31cafea211090670a61c658d5a9","target":"graph","created_at":"2026-05-20T00:01:14Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"We find that R_out,side,long all decrease with increasing m_T and increase with collision energy, consistent with collective expansion, R_long showing the strongest and R_side the weakest energy dependence. The Levy index alpha decreases with collision energy, with a larger m_T-dependence towards higher energies."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The UrQMD transport model produces a pion emission source whose correlation functions are accurately captured by three-dimensional Levy parameterizations without additional contributions from a QCD phase transition or other unmodeled effects."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"UrQMD simulations show pion source radii increasing with collision energy and decreasing with transverse mass, with the Levy index alpha falling at higher energies."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"UrQMD simulations of Au+Au collisions show pion source radii increasing with collision energy while decreasing with transverse mass."}],"snapshot_sha256":"48dc5403774458d042b5b1cc2eb7b44d213dfaca16c78fd9b339c7c5c86fda6a"},"formal_canon":{"evidence_count":2,"snapshot_sha256":"c75e27ae0d70767c2c5194b5b1154bd56b7449ce260a23fb66a6847d994a48d5"},"integrity":{"available":true,"clean":false,"detectors_run":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T19:33:25.748658Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"doi_title_agreement","ran_at":"2026-05-19T19:31:19.118431Z","status":"completed","version":"1.0.0"},{"findings_count":1,"name":"doi_compliance","ran_at":"2026-05-19T19:21:29.163467Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T17:21:56.012594Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.15717/integrity.json","findings":[{"audited_at":"2026-05-19T19:21:29.163467Z","detected_arxiv_id":null,"detected_doi":"10.1142/97898112384060023","detector":"doi_compliance","finding_type":"recoverable_identifier","note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1142/97898112384060023) was visible in the surrounding text but could not be confirmed against doi.org as printed.","ref_index":5,"severity":"advisory","verdict_class":"incontrovertible"}],"snapshot_sha256":"a54bd7524ba5681fbed49bedaca2ef087fc0b0e60bd70806190247fca2239dca","summary":{"advisory":1,"by_detector":{"doi_compliance":{"advisory":1,"critical":0,"informational":0,"total":1}},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Femtoscopic measurements of two-pion Bose--Einstein correlations have established that particle-emitting sources in heavy-ion collisions are well described by L\\'evy $\\alpha$-stable distributions, motivating systematic studies across a wide range of collision energies. In this work, we present a three-dimensional femtoscopic analysis of pion pairs in Au+Au collisions simulated with the UrQMD model for collision energies $\\sqrt{s_{NN}}=3$--$27\\,\\mathrm{GeV}$, taking the RHIC BES-II range of collider and fixed target experiment energies for reference. Using L\\'evy-type source parameterisations, ","authors_text":"Daniel Kincses, Mate Csanad, Matyas Molnar","cross_cats":["hep-ph","nucl-ex"],"headline":"UrQMD simulations of Au+Au collisions show pion source radii increasing with collision energy while decreasing with transverse mass.","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-05-15T08:09:53Z","title":"Pion emission source shape in UrQMD Au+Au collisions at STAR energies"},"references":{"count":48,"internal_anchors":7,"resolved_work":48,"sample":[{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":1,"title":"AAPPS Bulletin31(1), 12 (2021)","work_id":"de5926df-c2d6-49a2-bacd-45c697573799","year":2021},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":2,"title":"Physical Review Letters3(4), 181 (1959)","work_id":"39c0ecfc-2a77-4b0d-9ae2-0398b1957885","year":1959},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":3,"title":"Lawrence Berkeley National LaboratoryLBNL Report LBL-19417.(1985)","work_id":"fb5cdca3-5361-4f2d-b83b-1f851fe31cb3","year":1959},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":4,"title":"In: International Workshop on Correla- tions and Multiparticle Production (1990)","work_id":"919a4412-b00d-43d0-bee4-1aca93317eb0","year":1990},{"cited_arxiv_id":"","doi":"10.1142/9789811238406","is_internal_anchor":false,"ref_index":5,"title":"In: Gribov-90 Memorial Volume, pp","work_id":"2156ff3c-3352-42de-9dfa-b5786d048a8c","year":2021}],"snapshot_sha256":"27d8431b22906607e2aef888b7745850ca2197cd7b211d24e574bdc0380b8763"},"source":{"id":"2605.15717","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T19:08:58.368774Z","id":"24c5158c-0b48-4b0a-bdf8-2464bc948335","model_set":{"reader":"grok-4.3"},"one_line_summary":"UrQMD simulations show pion source radii increasing with collision energy and decreasing with transverse mass, with the Levy index alpha falling at higher energies.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"UrQMD simulations of Au+Au collisions show pion source radii increasing with collision energy while decreasing with transverse mass.","strongest_claim":"We find that R_out,side,long all decrease with increasing m_T and increase with collision energy, consistent with collective expansion, R_long showing the strongest and R_side the weakest energy dependence. The Levy index alpha decreases with collision energy, with a larger m_T-dependence towards higher energies.","weakest_assumption":"The UrQMD transport model produces a pion emission source whose correlation functions are accurately captured by three-dimensional Levy parameterizations without additional contributions from a QCD phase transition or other unmodeled effects."}},"verdict_id":"24c5158c-0b48-4b0a-bdf8-2464bc948335"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:444737d186ccbae2f71b90a45fbee973b872b728d315db8d430fa56e908e5adf","target":"record","created_at":"2026-05-20T00:01:14Z","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":"f3b4876db4a54bbdbdb9c0af58b8359a73cfcb5fd41a88d8cf2ffbe36a38d50a","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-05-15T08:09:53Z","title_canon_sha256":"f3958ee400174e22a0dea6ef52f36ca80cabcf9cddd8a1b8432e66a51cdcabc3"},"schema_version":"1.0","source":{"id":"2605.15717","kind":"arxiv","version":1}},"canonical_sha256":"6c21f349736abd96edfa9cc9a59c57a7ea2abb9ca83dcca6619c47e90162e5c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c21f349736abd96edfa9cc9a59c57a7ea2abb9ca83dcca6619c47e90162e5c7","first_computed_at":"2026-05-20T00:01:14.422129Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:01:14.422129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yOUWnMtHEoXEYJPei5dhS4lH8DS291DvLAH1rxlM4rCFZ3O/vskBgWRNtwO+4C02wtxCXuOBw7pKtdYJxxVWDA==","signature_status":"signed_v1","signed_at":"2026-05-20T00:01:14.423100Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.15717","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0da64780ab2330a410454022d8a5545b284a13b69c7c6031b69b82721dcd2769","sha256:444737d186ccbae2f71b90a45fbee973b872b728d315db8d430fa56e908e5adf","sha256:9a093cffa7957663202a16419ad46fe81fa4a31cafea211090670a61c658d5a9"],"state_sha256":"2eb360dbeb9753d39afbca1ec1af5ff6a83f63302362acad5bf98fac9c4a378e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s/ILUA2H2W3XL3F2O6yC9un9KD2P1gZ3QdXLS7NS6TOC7UJxTtOQMxBMXmHqRUm11PzbrD06lsyGtrtblr6GCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T09:02:32.963922Z","bundle_sha256":"13734daf18b2fa9eb978f843e8f5a8eb619c2b4f4021f5c5b462b75b648434ce"}}