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Yao, Y. Zhang, Y. Zheng, Z. Ajaltouni, Z.-C. Huard, Z. Li, Z. Mathe, Z. Xu, Z. Yang","submitted_at":"2017-07-06T03:01:20Z","abstract_excerpt":"A highly significant structure is observed in the $\\Lambda_c^+K^-\\pi^+\\pi^+$ mass spectrum, where the $\\Lambda_c^+$ baryon is reconstructed in the decay mode $pK^-\\pi^+$. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon $\\Xi_{cc}^{++}$. The difference between the masses of the $\\Xi_{cc}^{++}$ and $\\Lambda_c^+$ states is measured to be $1334.94 \\pm 0.72 (\\mathrm{stat}) \\pm 0.27 (\\mathrm{syst}~\\mathrm{MeV}/c^2$, and the $\\Xi_{cc}^{++}$ mass is then determined to be $3621.40 \\pm 0.72 (\\mathrm{stat}) \\pm 0.27 (\\mathrm{syst} \\pm 0"},"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":"1707.01621","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2017-07-06T03:01:20Z","cross_cats_sorted":[],"title_canon_sha256":"20fdb9180950c026e88ffbd0a416a5472add5e51a968010865d3d4dae918557c","abstract_canon_sha256":"6a9ad21e9d76f91871121cdd342eed9f8d2eeb237c569eaec7ecfe6c56ca605e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:34:47.411799Z","signature_b64":"rsQhBAE1pyxOxdlzH7WT6MfKlEsge58AsbxB3a92HOXNDgbuZhT4325N3rxpXvhCozTga8W27GYjwTS7u6euBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df7d5830627d5f49b63e9d331f0c2de35c52753173c35eeb6bbf0f5ef2cf21a7","last_reissued_at":"2026-05-18T00:34:47.411082Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:34:47.411082Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of the doubly charmed baryon $\\Xi_{cc}^{++}$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A. Alves Jr, A. Alfonso Albero, A. Artamonov, A. Badalov, A. Baranov, A. Bay, A. Beiter, A. Berezhnoy, A. Bertolin, A. Birnkraut, A. Bitadze, A. Bizzeti, A.B. Morris, A. Bondar, A. Borgheresi, A.B. Rodrigues, A. Bursche, A. Camboni, A. Carbone, A. Cardini, A.C. dos Reis, A. Chubykin, A. Comerma-Montells, A. Contu, A. Cook, A. Crocombe, A. Davis, A. Dendek, A. Di Canto, A. Dosil Su\\'arez, A. Dovbnya, A. Dziurda, A. Dzyuba, A. Falabella, A. Fernandez Prieto, A. Gallas Torreira, A. Golutvin, A. Gomes, A. Grecu, A. Heister, A. Hicheur, A. Jawahery, A.K. Kuonen, A. Kosmyntseva, A. Lai, A. Leflat, A. Loi, A. Lupato, A. Lusiani, A. Malinin, A. Massafferri, A. Mathad, A. Mauri, A. Mazurov, A. McNab, A. Merli, A. Mogini, A. Nandi, A. Nogay, A. Oblakowska-Mucha, A. Ossowska, A. Oyanguren, A. Palano, A. Papanestis, A. Pastore, A. Pearce, A. Pellegrino, A. Petrolini, A. Petrov, A. Pistone, A. Piucci, A. Poluektov, A. Popov, A. Puig Navarro, A. Robert, A. Rogozhnikov, A. Rollings, A. Romero Vidal, A. Sarti, A. Satta, A. Schopper, A. Sciubba, A. Semennikov, A. Sergi, A. Tayduganov, A. Trisovic, A. Tsaregorodtsev, A. Tully, A. Ukleja, A. Usachov, A. Ustyuzhanin, A. Vagner, A. Valassi, A. Venkateswaran, A. Vollhardt, A. Vorobyev, A. Weiden, A. Zhelezov, B. Adeva, B. Couturier, B. Dey, B.G. Siddi, B. Hamilton, B. Jost, B. Khanji, B. Leverington, B. Maddock, B. Maurin, B. Meadows, B. Pietrzyk, B. Quintana, B. Rachwal, B.R. Gruberg Cazon, B. Saitta, B. Sanmartin Sedes, B. Schmidt, B. Sciascia, B. Souza De Paula, B. Spaan, B. Storaci, B. Viaud, B. Voneki, C. Baesso, C. Barschel, C. Betancourt, C. Bozzi, C. Burr, C. D'Ambrosio, C. F\\\"arber, C. Fitzpatrick, C. Frei, C. Gaspar, C. G\\\"obel, C. Gotti, C. Hadjivasiliou, C. Haen, C. Hasse, C. Hombach, C.J.G. Onderwater, C. Joram, C. Khurewathanakul, C. Langenbruch, C. Lazzeroni, C. Marin Benito, C. Matteuzzi, C.M. Costa Sobral, C. Meaux, C. Nguyen-Mau, C. Pappenheimer, C. Parkes, C. Patrignani, C. Potterat, C. Prouve, C. 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Romanovskiy, V. Salustino Guimaraes, V. Shevchenko, V. Syropoulos, V. Tisserand, V. Vagnoni, V.V. Gligorov, V. Volkov, V. Vorobyev, V. Zhukov, W. Baldini, W. Barter, W. Bonivento, W. Byczynski, W. Funk, W. Hulsbergen, W. Krzemien, W. Kucewicz, W. Parker, W. Qian, W. Sutcliffe, W. Wislicki, X. Cid Vidal, X. Han, X. Liu, X. Lyu, X. Vilasis-Cardona, X. Yuan, X. Zhu, Y. Amhis, Y. Gao, Y. Li, Y. Shcheglov, Yu. Guz, Y. Xie, Y. Yao, Y. Zhang, Y. Zheng, Z. Ajaltouni, Z.-C. Huard, Z. Li, Z. Mathe, Z. Xu, Z. Yang","submitted_at":"2017-07-06T03:01:20Z","abstract_excerpt":"A highly significant structure is observed in the $\\Lambda_c^+K^-\\pi^+\\pi^+$ mass spectrum, where the $\\Lambda_c^+$ baryon is reconstructed in the decay mode $pK^-\\pi^+$. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon $\\Xi_{cc}^{++}$. 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