Improved search for D0-D̄0 mixing using semileptonic decays at Belle

U. Bitenc, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, I. Bedny, K. Belous, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, M. C. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. S. ChoY. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, D. H. Kah, H. Kaji, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, Y. J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. G. Shiu, J. B. Singh, A. Sokolov, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, A. Zupanc

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Abstract

A search for mixing in the neutral D meson system has been performed using semileptonic D0→K(*)-e+ν and D0→K(*)-μ+ν decays. Neutral D mesons from D*+→D0πs+ decays are used and the flavor at production is tagged by the charge of the slow pion. The measurement is performed using 492fb-1 of data recorded by the Belle detector. From the yield of right-sign and wrong-sign decays arising from nonmixed and mixed events, respectively, we measure the ratio of the time-integrated mixing rate to the unmixed rate to be RM=(1.3±2.2±2.0)×10-4. This corresponds to an upper limit of RM<6.1×10-4 at the 90% C.L.

Original languageEnglish
Article number112003
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume77
Issue number11
DOIs
Publication statusPublished - 2008 Jun 16

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Bitenc, U., Adachi, I., Aihara, H., Arinstein, K., Aushev, T., Bakich, A. M., Balagura, V., Bedny, I., Belous, K., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chang, M. C., Chen, A., Chen, W. T., Cheon, B. G., Chistov, R., ... Zupanc, A. (2008). Improved search for D0-D̄0 mixing using semileptonic decays at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 77(11), [112003]. https://doi.org/10.1103/PhysRevD.77.112003