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The results are based on a data sample of 21.7 fb^-1 collected with the Belle detector at the KEKB e+e- collider. Attributing the signals to the Upsilon(5S) resonance, the partial widths Gamma(Upsilon(5S) -> Upsilon(1S) pi+pi-) = 0.59 +- 0.04 (stat) +- 0.09 (syst) MeV and Gamma(Upsilon(5S) -> Upsilon(2S) pi+pi-) = 0.85 +- 0.07 (stat) +- 0.16 (syst) MeV are obtained from the observed 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":"0710.2577","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2007-10-13T03:11:25Z","cross_cats_sorted":[],"title_canon_sha256":"180ff65bc000224a56f88cad8c197510debeed7f6cf6cbb206e1b3b5cd4249e5","abstract_canon_sha256":"0a6e15987955b11e201171fc1f006254a3dc3f2e52dff8af1e19750210597a1f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:57:10.797606Z","signature_b64":"ntzddy7HeeT1MK9bAXD/c1xz3UsH9M0r5X9NtxRoxZyqfau9ElE0xBtuVXN1kLGqTBhwrA1gp6W1qWIHG9hPBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"094921bbf1859e9785ee888775d304c8e4e4be854a4a03a1b0d03011318c7990","last_reissued_at":"2026-07-04T15:57:10.797149Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:57:10.797149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Sokolov et al, M. Shapkin, The Belle Collaboration: K.-F. Chen, W.-S. Hou","submitted_at":"2007-10-13T03:11:25Z","abstract_excerpt":"We report the first observation of e+e- -> Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, and first evidence for e+e- -> Upsilon(3S)pi+pi-, Upsilon(1S)K+K-, near the peak of the Upsilon(5S) resonance at sqrt{s}~10.87 GeV. The results are based on a data sample of 21.7 fb^-1 collected with the Belle detector at the KEKB e+e- collider. 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