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Observation of D0 - D̄ 0 Mixing in e+ e- collisions

  • B. R. Ko
  • , E. Won
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , D. M. Asner
  • , V. Aulchenko
  • , T. Aushev
  • , A. Bala
  • , V. Bhardwaj
  • , B. Bhuyan
  • , A. Bobrov
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , T. E. Browder
  • , D. Červenkov
  • , A. Chen
  • , B. G. Cheon
  • , K. Chilikin
  • R. Chistov, I. S. Cho, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, D. Dutta, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, T. Hara, H. Hayashii, X. H. He, T. Higuchi, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, J. Klucar, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, O. Nitoh, S. Ogawa, S. Okuno, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, T. Peng, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, S. Ryu, H. Sahoo, Y. Sakai, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, R. Seidl, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, Y. S. Sohn, A. Sokolov, S. Stanič, M. Starič, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc
  • Korea University
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • Novosibirsk State University
  • Pacific Northwest National Laboratory
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Panjab University
  • Nara Women's University
  • Indian Institute of Technology Guwahati
  • H. Niewodniczanski Institute of Nuclear Physics
  • Jožef Stefan Institute
  • University of Maribor
  • University of Hawai'i at Mānoa
  • Charles University
  • National Central University
  • Hanyang University
  • Yonsei University
  • Korea Institute of Science and Technology Information
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Gyeongsang National University
  • Sungkyunkwan University
  • Wayne State University
  • Technische Universität München
  • Moscow Engineering Physics Institute
  • German Electron Synchrotron
  • Tata Institute of Fundamental Research
  • Austrian Academy of Sciences
  • University of Ljubljana
  • Peking University
  • Tohoku Gakuin University
  • National Taiwan University
  • Kyungpook National University
  • Nagoya University
  • Tohoku University
  • University of Melbourne
  • Niigata University
  • Soongsil University
  • Karlsruhe Institute of Technology
  • Tokyo Metropolitan University
  • Justus Liebig University Giessen
  • Seoul National University
  • Virginia Polytechnic Institute and State University
  • Indian Institute of Technology Madras
  • University of Science and Technology of China
  • CAS - Institute of High Energy Physics
  • National Institute for Nuclear Physics
  • Hiroshima Institute of Technology
  • Osaka Metropolitan University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • Luther College, Decorah
  • University of Pittsburgh
  • Swiss Federal Institute of Technology Lausanne
  • University of the Basque Country
  • Ikerbasque Basque Foundation for Science
  • University of Cincinnati
  • Riken BNL Research Center
  • Institute for High Energy Physics
  • Beihang University
  • Institute of Science Tokyo
  • The University of Sydney
  • University of Nova Gorica
  • University of Turin
  • Moscow Institute of Physics and Technology
  • University of Bonn
  • National United University Taiwan
  • Nippon Dental University

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

We observe D0-D̄ 0 mixing in the decay D0→K+π - using a data sample of integrated luminosity 976 fb-1 collected with the Belle detector at the KEKB e +e- asymmetric-energy collider. We measure the mixing parameters x′ 2=(0.09±0.22)×10-3 and y′=(4.6±3.4)×10-3 and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates RD=(3.53±0.13)×10-3, where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.

Original languageEnglish
Article number111801
JournalPhysical Review Letters
Volume112
Issue number11
DOIs
StatePublished - 17 Mar 2014

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