{"paper":{"title":"Observation of the decay $B_s^0\\rightarrow K^0\\overline{K}^0$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Abdesselam, A. Bobrov, A. Bozek, A. Chen, A. Drutskoy, A. Garmash, A. Ishikawa, A. J. Schwartz, A. Kuzmin, A. M. Bakich, A. Moll, A. Rostomyan, A. Sokolov, A. Vinokurova, A. Vossen, A. Zupanc, B. Bhuyan, Belle Collaboration: B. Pal, B. G. Cheon, B. G. Fulsom, B. Shwartz, C. H. Li, C. H. Wang, C. Kiesling, C. Pulvermacher, C. Schwanda, C. Van Hulse, C. W. Park, C. Z. Yuan, D. Cinabro, D. Dutta, D. Greenwald, D. Joffe, D. Liventsev, D. M. Asner, D. Matvienko, D. \\v{C}ervenkov, D. Y. Kim, E. Barberio, E. Kato, E. Nakano, E. Ribe\\v{z}l, E. Solovieva, E. Won, F. Simon, G. B. Mohanty, G. Pakhlova, G. Schnell, G. Varner, H. Aihara, H. B. Jeon, H. Farhat, H. Hayashii, H. J. Kim, H. K. Moon, H. Li, H. Miyata, H. Park, H. Sahoo, I. Adachi, I. Badhrees, I. Jaegle, I. S. Lee, I. S. Seong, J. Biswal, J. Dalseno, J. E. Fast, J.-G. Shiu, J. Haba, J. Libby, J. Rauch, J. Stypula, J. Yelton, K. Cho, K. Hayasaka, K. H. Kang, K. Inami, K. Kinoshita, K. K. Joo, K. Miyabayashi, K. M. Williams, K. Senyo, K. T. Kim, K. Trabelsi, L. E. Piilonen, L. Li, L. Li Gioi, L. Pes\\'antez, M. Bra\\v{c}ko, M. J. Kim, M. Masuda, M. Nakao, M. Nayak, M. N. Wagner, M. Petri\\v{c}, M. Ritter, M. Stari\\v{c}, M. Sumihama, M. Uchida, M. Watanabe, M.-Z. Wang, N. Dash, N. K. Nisar, O. Grzymkowska, O. Schneider, O. Seon, P. Behera, P. Goldenzweig, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Lukin, P. Pakhlov, P. Urquijo, P. Vanhoefer, R. Ayad, R. Chistov, R. Gillard, R. Kumar, R. Mizuk, R. Mussa, R. Pestotnik, S. Bahinipati, S. Eidelman, S. H. Kim, S. Korpar, S. Mohanty, S. Nishida, S. Ogawa, S. Okuno, S. Paul, S. Ryu, S. Sandilya, S. Stani\\v{c}, S. Uehara, S. Uno, T.-A. Shibata, T. Aushev, T. Aziz, T. E. Browder, T. Hara, T. Julius, T. Kawasaki, T. K. Pedlar, T. Kuhr, T. Kumita, T. Luo, T. Mori, T. Nanut, T. Sanuki, T. Schl\\\"uter, T. Sumiyoshi, T. Uglov, U. Tamponi, V. Babu, V. Bhardwaj, V. Chekelian, V. Chobanova, V. Gaur, V. Savinov, V. Shebalin, V. Zhilich, V. Zhulanov, W.-S. Hou, W. W. Jacobs, X. H. He, X. L. Wang, Y. Choi, Y. Iwasaki, Y.-J. Kwon, Y. M. Goh, Y. Sakai, Y. Sato, Y. Seino, Y.-S. Sohn, Y. Teramoto, Y. Usov, Y. Watanabe, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang","submitted_at":"2015-12-07T18:02:25Z","abstract_excerpt":"We measure the decay $B_s^0\\rightarrow K^0\\overline{K}^0$ using data collected at the $\\Upsilon(5S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. The data sample used corresponds to an integrated luminosity of 121.4 ${\\rm fb^{-1}}$. We measure a branching fraction $\\mathcal{B}(B_s^0\\rightarrow K^0\\overline{K}^0) = [19.6\\,^{+5.8}_{-5.1}({\\rm stat.})\\,\\pm1.0({\\rm sys.})\\,\\pm 2.0(N^{}_{B_s^0\\overline{B}_s^0})]\\times 10^{-6}$ with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.02145","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}