Search for leptonic decays of D0 mesons

M. Petrič, M. Starič, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, M. Bračko, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, I. S. Cho, Y. Choi, J. Dalseno, M. DanilovA. Das, Z. Dolëal, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, N. J. Joshi, T. Julius, N. Katayama, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, S. K. Kim, B. R. Ko, S. Korpar, P. Krïan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, S. H. Lee, J. Li, A. Limosani, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, T. Mori, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, M. Prim, M. Röhrken, S. Ryu, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. G. Shiu, B. Shwartz, F. Simon, P. Smerkol, T. Sumiyoshi, M. Tanaka, N. Taniguchi, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, Y. Unno, S. Uno, G. Varner, K. Vervink, A. Vinokurova, C. H. Wang, M. Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc

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Abstract

We search for the flavor-changing neutral current decays D0→μ+μ- and D0→e+e-, and for the lepton-flavor violating decays D0→e±μ + using 660fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no evidence for any of these decays. We obtain significantly improved upper limits on the branching fractions: B(D0→μ+μ-)<1. 4×10-7, B(D0→e+e-)<7. 9×10-8, and B(D0→e+μ-) +B(D0→μ+e-)<2.6×10-7 at 90% confidence level.

Original languageEnglish
Article number091102
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number9
DOIs
Publication statusPublished - 2010 May 28

ASJC Scopus subject areas

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

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    Petrič, M., Starič, M., Adachi, I., Aihara, H., Arinstein, K., Aushev, T., Bakich, A. M., Balagura, V., Barberio, E., Belous, K., Bhardwaj, V., Bračko, M., Browder, T. E., Chen, A., Chen, P., Cheon, B. G., Cho, I. S., Choi, Y., Dalseno, J., ... Zupanc, A. (2010). Search for leptonic decays of D0 mesons. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(9), [091102]. https://doi.org/10.1103/PhysRevD.81.091102