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Observation ofD0−D¯0Mixing ine+e−Collisions

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posted on 2024-08-06, 09:46 authored by 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'Mir 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
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.

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ISSN

0031-9007

Journal title

Physical Review Letters

Volume

112

Issue

11

Article number

article no. 111801

Publisher

American Physical Society

Copyright statement

Copyright © 2014 American Physical Society. The published version is reproduced in accordance with the copyright policy of the publisher.

Language

eng

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