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Wiechczynski, J.*; 谷田 聖; Belle Collaboration*; 他172名*
Physical Review D, 91(3), p.032008_1 - 032008_9, 2015/02
被引用回数:6 パーセンタイル:28.43(Astronomy & Astrophysics)We report a measurement of the and meson decays to the and final states, respectively, using pairs collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider. Using the , and decay modes for the reconstruction, we measure the following branching fractions: and . We find the ratio of the branching fraction of to that of the analogous Cabibbo-favored decay to be , which is consistent with the naive factorization model. We also observe a deviation of the invariant-mass distribution from the three-body phase-space model for both studied decays.