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arxiv: 1206.5948 · v3 · pith:YCGUYLT7new · submitted 2012-06-26 · ✦ hep-ex

Search for B⁰ decays to invisible final states at Belle

Belle Collaboration: C.-L. Hsu , P. Chang , I. Adachi , H. Aihara , K. Arinstein , D. M. Asner , V. Aulchenko , T. Aushev
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A. M. Bakich B. Bhuyan M. Bischofberger A. Bondar G. Bonvicini A. Bozek M. Bra\v{c}ko T. E. Browder M.-C. Chang Y. Chao V. Chekelian A. Chen P. Chen B. G. Cheon K. Chilikin I.-S. Cho K. Cho Y. Choi J. Dalseno J. Dingfelder Z. Dole\v{z}al Z. Dr\'asal D. Dutta S. Eidelman D. Epifanov S. Esen H. Farhat J. E. Fast V. Gaur N. Gabyshev R. Gillard Y. M. Goh J. Haba T. Hara K. Hayasaka H. Hayashii Y. Horii Y. Hoshi W.-S. Hou Y. B. Hsiung H. J. Hyun T. Iijima K. Inami A. Ishikawa R. Itoh M. Iwabuchi Y. Iwasaki T. Iwashita T. Julius J. H. Kang T. Kawasaki H. Kichimi C. Kiesling H. J. Kim H. O. Kim J. B. Kim J. H. Kim K. T. Kim Y. J. Kim B. R. Ko P. Kody\v{s} S. Korpar P. Krokovny T. Kuhr A. Kuzmin P. Kvasni\v{c}ka Y.-J. Kwon S.-H. Lee J. Li Y. Li J. Libby Y. Liu Z. Q. Liu D. Liventsev R. Louvot K. Miyabayashi H. Miyata Y. Miyazaki G. B. Mohanty A. Moll N. Muramatsu E. Nakano M. Nakao Z. Natkaniec C. Ng S. Nishida O. Nitoh T. Ohshima S. Okuno S. L. Olsen G. Pakhlova C. W. Park H. Park H. K. Park T. K. Pedlar R. Pestotnik M. Petri\v{c} L. E. Piilonen M. Ritter M. R\"ohrken S. Ryu H. Sahoo Y. Sakai S. Sandilya T. Sanuki O. Schneider C. Schwanda A. J. Schwartz K. Senyo M. E. Sevior M. Shapkin C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz A. Sibidanov F. Simon J. B. Singh P. Smerkol Y.-S. Sohn E. Solovieva S. Stani\v{c} M. Stari\v{c} M. Sumihama T. Sumiyoshi G. Tatishvili Y. Teramoto K. Trabelsi M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo Y. Usov S. E. Vahsen P. Vanhoefer G. Varner V. Vorobyev P. Wang M. Watanabe Y. Watanabe K. M. Williams E. Won H. Yamamoto Y. Yamashita Z. P. Zhang V. Zhilich V. Zhulanov
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We report a search for $B^{0}$ decays into invisible final states using a data sample of $657 \times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^{+}e^{-}$ collider. The signal is identified by fully reconstructing a hadronic decay of the accompanying $B$ meson and requiring no other particles in the event. No significant signal is observed, and we obtain an upper limit of $1.3 \times 10^{-4}$ at the 90% confidence level for the branching fraction of invisible $B^{0}$ decay.

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