2007/07/31 by K. -F. Chen, I. Adachi, H. Aihara +95 · 61 citations
Physics and Astronomy · #B meson #Branching fraction #Collider #Electron–positron annihilation #Hadron #High-Energy Particle Collisions Research #KEKB #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.99.221802
published in Physical Review Letters 99(22), 221802 (American Physical Society) · 6 pages, 2 figures, submit to PRL
arxiv created 2007/09/03 · openalex publication_date 2007/11/30 · openalex created_date 2016/06/24 · arxiv updated 2019/08/13 · openalex updated_date 2026/08/05
We present a search for the rare decays B\ensuremath→h(*)\ensuremathν\ensuremathν, where h(*) stands for a light meson. A data sample of 535\ifmmode×\else\texttimes\fi106 BB pairs collected with the Belle detector at the KEKB e+e^\ensuremath- 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 B0\ensuremath→K*0\ensuremathν\ensuremathν and B+\ensuremath→K+\ensuremathν\ensuremathν decays are more stringent than the previous constraints, while the first searches for B0\ensuremath→K0\ensuremathν\ensuremathν, \ensuremathπ0\ensuremathν\ensuremathν, \ensuremathρ0\ensuremathν\ensuremathν, \ensuremathφ\ensuremathν\ensuremathν and B+\ensuremath→K*+\ensuremathν\ensuremathν, \ensuremathρ+\ensuremathν\ensuremathν are reported.