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Katrenko, P.*; 谷田 聖; Belle Collaboration*; 他168名*
Physical Review Letters, 124(12), p.122001_1 - 122001_7, 2020/03
被引用回数:2 パーセンタイル:22.58(Physics, Multidisciplinary)We report the first observation of the radiative decay of the into a charmonium state. The statistical significance of the observed signal of is 6.3 standard deviations including systematics. The branching fraction is calculated to be Br() = . We also searched for radiative decays into and and set upper limits on their branching fractions. These results are obtained from a 24.9 fb data sample collected with the Belle detector at the KEKB asymmetric-energy collider at a center-of-mass energy equal to the mass using tagging by the transitions.
Guido, E.*; 谷田 聖; Belle Collaboration*; 他168名*
Physical Review Letters, 121(6), p.062001_1 - 062001_7, 2018/08
被引用回数:7 パーセンタイル:54.68(Physics, Multidisciplinary)We report the first observation of the hadronic transition , using 496 fb data collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider. We reconstruct the meson through its decays to and to , with . We measure: , with a significance of 5.7.