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Li, Y.*; 谷田 聖; Belle Collaboration*; 他190名*
Physical Review D, 104(5), p.052005_1 - 052005_9, 2021/09
被引用回数:7 パーセンタイル:62.71(Astronomy & Astrophysics)Using a data sample of 980~fb collected with the Belle detector operating at the KEKB asymmetric-energy collider, we present evidence for the in the resonant substructure of ( = + ) decays. The significance of the signal is 4.2 after considering the systematic uncertainties. The ratio of the branching fraction of relative to that of is calculated to be 0.220 0.059(stat.) 0.035(syst.). The individual ratios of the branching fractions of the two isospin modes are also determined, and found to be =(9.6 3.2(stat.) 1.8(syst.))% and = (5.5 2.8(stat.) 0.7(syst.))%.
Yelton, J.*; 谷田 聖; Belle Collaboration*; 他190名*
Physical Review Letters, 121(5), p.052003_1 - 052003_7, 2018/08
被引用回数:30 パーセンタイル:85.85(Physics, Multidisciplinary)Using data recorded with the Belle detector, we observe a new excited hyperon, an candidate decaying into and with a mass of and a width of . The is seen primarily in , and decays.