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Search for B --> h(*)nunu[over ] decays at Belle
Authors:Chen K-F  Adachi I  Aihara H  Aulchenko V  Aushev T  Bahinipati S  Bakich A M  Balagura V  Barberio E  Bay A  Belous K  Bitenc U  Bondar A  Bozek A  Bracko M  Brodzicka J  Browder T E  Chang M-C  Chang P  Chao Y  Chen A  Cheon B G  Chiang C-C  Cho I-S  Choi Y  Choi Y K  Cole S  Danilov M  Dash M  Drutskoy A  Eidelman S  Fratina S  Gabyshev N  Golob B  Ha H  Haba J  Hara T  Hayasaka K  Hazumi M  Heffernan D  Hokuue T  Hoshi Y  Hou W-S  Hsiung Y B  Hyun H J  Iijima T  Ikado K  Inami K  Ishikawa A  Ishino H  Itoh R  Iwasaki M  Iwasaki Y  Joshi N J  Kajiwara S  Kang J H  Katayama N  Kawai H  Kawasaki T  Kichimi H  Kim Y J  Kinoshita K  Korpar S  Krizan P
Institution:Department of Physics, National Taiwan University, Taipei.
Abstract:We present a search for the rare decays B --> h(*)nunuover ], where h(*) stands for a light meson. A data sample of 535 x 10{6} BBover ] pairs collected with the Belle detector at the KEKB e{+}e{-} collider is used. Signal candidates are required to have an accompanying B meson fully reconstructed in a hadronic mode and signal side particles consistent with a single h(*) meson. No significant signal is observed and we set upper limits on the branching fractions at 90% confidence level. The limits on B{0} --> K{*0}nunuover ] and B{+} --> K{+}nunuover ] decays are more stringent than the previous constraints, while the first searches for B{0} --> K{0}nunuover ], pi{0}nunuover ], rho{0}nunuover ], varphinunuover ] and B{+} --> K{*+}nunuover ], rho{+}nunuover ] are reported.
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