Measurements of branching fraction and direct asymmetry in and a search for

Kaliyar, A. B.*; 谷田 聖; Belle Collaboration*; 他197名*

Physical Review D, 99(3), p.031102_1 - 031102_9, 2019/02

AA2019-0538.pdf:0.36MB

https://doi.org/10.1103/PhysRevD.99.031102

We study charmless hadronic decays of charged mesons to the final states and using a data sample that contains pairs, and was collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider. For , the measured branching fraction and direct asymmetry are and []%, respectively. In the absence of a statistically significant signal for , we obtain a 90% confidence-level upper limit on its branching fraction as .