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Mohanty, S.*; 谷田 聖; Belle Collaboration*; 他184名*
Physical Review D, 103(5), p.052013_1 - 052013_9, 2021/03
被引用回数:0 パーセンタイル:0.01(Astronomy & Astrophysics)We report the measurement of branching fractions and -violation asymmetries in decays based on a data sample containing events. The data were recorded at the resonance with the Belle detector at the KEKB asymmetric-energy collider. For , the branching fraction and -violation asymmetry measured below the threshold () are and , respectively. Similarly, the branching fraction obtained for below the threshold is . We also measure the -violation asymmetry for within the region () to be .
住浜 水季*; 谷田 聖; Belle Collaboration*; 他184名*
Physical Review Letters, 122(7), p.072501_1 - 072501_7, 2019/02
被引用回数:22 パーセンタイル:81.07(Physics, Multidisciplinary)We report the first observation of the doubly-strange baryon in its decay to via decays based on a data sample collected with the Belle detector at the KEKB asymmetric-energy collider. The mass and width are measured to be 1610.4 6.0 (stat) (syst) MeV and 59.9 4.8 (stat) (syst) MeV, respectively. We obtain 4.0 evidence of the with the same data sample. These results shed light on the structure of hyperon resonances with strangeness .
Julius, T.*; 谷田 聖; Belle Collaboration*; 他184名*
Physical Review D, 96(3), p.032007_1 - 032007_8, 2017/08
被引用回数:11 パーセンタイル:49.64(Astronomy & Astrophysics)We measure the branching fraction and -violating asymmetry in the decay , using a data sample of pairs collected at the resonance with the Belle detector at the KEKB collider. The obtained branching fraction and direct asymmetry are and , respectively. The signal significance, including the systematic uncertainty, is 6.4 standard deviations. We combine these results with Belle's earlier measurements of and to exclude the -violating parameter from the range at 95% confidence.