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arXiv · 1206.5948

Search for $B^{0}$ 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·A. M. Bakich·B. Bhuyan·M. Bischofberger·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·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. Doležal·Z. Drásal·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. Kodyš·S. Korpar·P. Krokovny·T. Kuhr·A. Kuzmin·P. Kvasnička·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
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Abstract

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 $Υ(4S)$ 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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Belle Collaboration, C. -L. Hsu, P. Chang, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, 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. Doležal, Z. Drásal, 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. Kodyš, S. Korpar, P. Krokovny, T. Kuhr, A. Kuzmin, P. Kvasnička, 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. 2012-08-06. Search for $B^{0}$ decays to invisible final states at Belle. https://doi.org/10.1103/physrevd.86.032002

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