2012/05/31 by Belle Collaboration, C. P. Shen, C. Z. Yuan +162 · 1 citation
Physics and Astronomy · #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.86.031102
published as Phys. Rev. D 86, 031102(R) (2012) · 7 pages, 5 figures, 1 table, accepted for publication as a Rapid Communication in Physical Review D
arxiv created 2012/07/24 · openalex publication_date 2012/08/15 · arxiv updated 2012/08/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Using samples of 102\ifmmode×\else\texttimes\fi106 \ensuremathΥ(1S) and 158\ifmmode×\else\texttimes\fi106 \ensuremathΥ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to the three-body final states \ensuremathφK+K^\ensuremath-, \ensuremathω\ensuremathπ+\ensuremathπ^\ensuremath- and K*0(892)K^\ensuremath-\ensuremathπ+, and to the two-body Vector-Tensor states (\ensuremathφf2^\ensuremath'(1525), \ensuremathωf2(1270), \ensuremathρa2(1320) and K*0(892)K2*0(1430)) and Axial-vector-Pseudoscalar (K1(1270)+K^\ensuremath-, K1(1400)+K^\ensuremath- and b1(1235)+\ensuremathπ^\ensuremath-) states. Signals are observed for the first time in the \ensuremathΥ(1S)\ensuremath→\ensuremathφK+K^\ensuremath-, \ensuremathω\ensuremathπ+\ensuremathπ^\ensuremath-, K*0K^\ensuremath-\ensuremathπ+, K*0K2*0 and \ensuremathΥ(2S)\ensuremath→\ensuremathφK+K^\ensuremath-, K*0K^\ensuremath-\ensuremathπ+ decay modes. Branching fractions are determined for all the processes, while 90% confidence level upper limits are established on the branching fractions for the modes with a statistical significance less than 3\ensuremathσ. The ratios of the branching fractions of \ensuremathΥ(2S) and \ensuremathΥ(1S) decays into the same final state are used to test a perturbative QCD prediction for OZI-suppressed bottomonium decays.