{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:ESXU3GAR3UUSJREBZ4DQDNSPPC","short_pith_number":"pith:ESXU3GAR","schema_version":"1.0","canonical_sha256":"24af4d9811dd2924c481cf0701b64f789720e8795be0f9d0c7d2082be703ca8d","source":{"kind":"arxiv","id":"1008.4405","version":1},"attestation_state":"computed","paper":{"title":"Study of the rare hyperon decay Omega \\to Xi \\pi^+ \\pi^-","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Chakravorty, C. Durandet, C. G. White, C. James, C. M. Jenkins, D. M. Kaplan, D. Rajaram, E. C. Dukes, G. Gidal, H. A. Rubin, H. K. Park, H. R. Gustafson, HyperCP Collaboration: O. Kamaev, J. Felix, J.-P. Perroud, J. Volk, K.-B. Luk, K. Clark, K. S. Nelson, L. C. Lu, M. Huang, M. J. Longo, N. Solomey, P. Zyla, R. A. Burnstein, S. L. White, T. D. Jones, T. Holmstrom, W. Luebke, W.-S. Choong, Y. C. Chen, Y. Fu","submitted_at":"2010-08-25T22:55:56Z","abstract_excerpt":"We report a new measurement of the decay \\Omega^- \\to \\Xi^- \\pi^+ \\pi^- with 76 events and a first observation of the decay \\Omega^+ \\to \\Xi^+ \\pi^+ \\pi^- with 24 events, yielding a combined branching ratio (3.74 ^{+0.67}_{-0.56}) \\times 10^{-4}. This represents a factor 25 increase in statistics over the best previous measurement. No evidence is seen for CP violation, with B(\\Omega^- \\to \\Xi^- \\pi^+ \\pi^-)=4.04^{+0.83}_{-0.71} \\times 10^{-4} and B(\\Omega^+ \\to \\Xi^+ \\pi^+ \\pi^-)=3.15^{+1.12}_{-0.89} \\times 10^{-4}. Contrary to theoretical expectation, we see little evidence for the decays \\Om"},"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":"1008.4405","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2010-08-25T22:55:56Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"a757441ab1b248a07659e8c283b6801087df603ae82cf9b83f88cb7da537be50","abstract_canon_sha256":"259ea7d24597f845ca0f39a1767a8ca2ebd93b7d15983154d516166ca8a716cc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:33:08.238409Z","signature_b64":"HDIjqyVVTHMemJh9nI4kQ5DWIE7zq2DUSCi5MSNegUWt4lVfhEY3t2/RGyxSls7K2qhupvRBLzkLjG4evuPtCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24af4d9811dd2924c481cf0701b64f789720e8795be0f9d0c7d2082be703ca8d","last_reissued_at":"2026-05-18T02:33:08.238007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:33:08.238007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Study of the rare hyperon decay Omega \\to Xi \\pi^+ \\pi^-","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Chakravorty, C. Durandet, C. G. White, C. James, C. M. Jenkins, D. M. Kaplan, D. Rajaram, E. C. Dukes, G. Gidal, H. A. Rubin, H. K. Park, H. R. Gustafson, HyperCP Collaboration: O. Kamaev, J. Felix, J.-P. Perroud, J. Volk, K.-B. Luk, K. Clark, K. S. Nelson, L. C. Lu, M. Huang, M. J. Longo, N. Solomey, P. Zyla, R. A. Burnstein, S. L. White, T. D. Jones, T. Holmstrom, W. Luebke, W.-S. Choong, Y. C. Chen, Y. Fu","submitted_at":"2010-08-25T22:55:56Z","abstract_excerpt":"We report a new measurement of the decay \\Omega^- \\to \\Xi^- \\pi^+ \\pi^- with 76 events and a first observation of the decay \\Omega^+ \\to \\Xi^+ \\pi^+ \\pi^- with 24 events, yielding a combined branching ratio (3.74 ^{+0.67}_{-0.56}) \\times 10^{-4}. This represents a factor 25 increase in statistics over the best previous measurement. No evidence is seen for CP violation, with B(\\Omega^- \\to \\Xi^- \\pi^+ \\pi^-)=4.04^{+0.83}_{-0.71} \\times 10^{-4} and B(\\Omega^+ \\to \\Xi^+ \\pi^+ \\pi^-)=3.15^{+1.12}_{-0.89} \\times 10^{-4}. 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