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arXiv · 1702.03224

Search for $\boldsymbol{B\to h\nu\bar{\nu}}$ decays with semileptonic tagging at Belle

The Belle Collaboration·J. Grygier·P. Goldenzweig·M. Heck·I. Adachi·H. Aihara·S. Al Said·D. M. Asner·T. Aushev·R. Ayad·T. Aziz·V. Babu·I. Badhrees·S. Bahinipati·A. M. Bakich·V. Bansal·E. Barberio·P. Behera·B. Bhuyan·J. Biswal·A. Bobrov·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·T. E. Browder·D. Cervenkov·P. Chang·V. Chekelian·A. Chen·B. G. Cheon·K. Chilikin·R. Chistov·K. Cho·Y. Choi·D. Cinabro·N. Dash·S. Di Carlo·Z. Doležal·Z. Drásal·D. Dutta·S. Eidelman·H. Farhat·J. E. Fast·T. Ferber·B. G. Fulsom·V. Gaur·N. Gabyshev·A. Garmash·M. Gelb·R. Gillard·B. Golob·O. Grzymkowska·E. Guido·J. Haba·T. Hara·K. Hayasaka·H. Hayashii·M. T. Hedges·C. -L. Hsu·T. Iijima·K. Inami·G. Inguglia·A. Ishikawa·R. Itoh·Y. Iwasaki·W. W. Jacobs·I. Jaegle·H. B. Jeon·Y. Jin·D. Joffe·K. K. Joo·T. Julius·J. Kahn·A. B. Kaliyar·K. H. Kang·G. Karyan·P. Katrenko·T. Kawasaki·T. Keck·H. Kichimi·C. Kiesling·D. Y. Kim·H. J. Kim·J. B. Kim·K. T. Kim·M. J. Kim·S. H. Kim·K. Kinoshita·P. Kodyš·S. Korpar·D. Kotchetkov·P. Križan·P. Krokovny·T. Kuhr·R. Kulasiri·T. Kumita·A. Kuzmin·Y. -J. Kwon·J. S. Lange
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Abstract

We present the results of a search for the rare decays $B\to h\nu\overline{\nu}$, where $h$ stands for $K^+,\:K^0_{\mathrm{S}},\:K^{\ast +},\:K^{\ast 0},\:\pi^+,\:\pi^0,\:\rho^+$ and $\rho^{0}$. The results are obtained with $772\times10^{6}$ $B\overline{B}$ pairs collected with the Belle detector at the KEKB $e^+ e^-$ collider. We reconstruct one $B$ meson in a semileptonic decay and require a single $h$ meson but nothing else on the signal side. We observe no significant signal and set upper limits on the branching fractions. The limits set on the $B\to K^0_{\mathrm{S}}\nu\overline{\nu}$, $B^0\to K^{*0}\nu\overline{\nu}$, $B\to \pi^+\nu\overline{\nu}$, $B^0\to\pi^0\nu\overline{\nu}$, $B^+\to\rho^+\nu\overline{\nu}$, and $B^0\to\rho^0\nu\overline{\nu}$ channels are the world's most stringent.

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The Belle Collaboration, J. Grygier, P. Goldenzweig, M. Heck, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Doležal, Z. Drásal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, R. Gillard, B. Golob, O. Grzymkowska, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, J. Kahn, A. B. Kaliyar, K. H. Kang, G. Karyan, P. Katrenko, T. Kawasaki, T. Keck, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange. 2017-02-10. Search for $\boldsymbol{B\to h\nu\bar{\nu}}$ decays with semileptonic tagging at Belle. https://doi.org/10.1103/physrevd.96.091101

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