Measurement of the branching fraction and asymmetry for decays
T. Bloomfield (School of Physics, University of Melbourne, Victoria 3010); M. E. Sevior (School of Physics, University of Melbourne, Victoria 3010); I. Adachi (High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193); H. Aihara (Department of Physics, University of Tokyo, Tokyo 113-0033); S. Al Said (Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451, Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589); et al - Show all 214 authors
We measure the branching fractions and asymmetries for the decays and , using a data sample of pairs collected at the resonance with the Belle detector at the KEKB collider. The branching fractions obtained and direct asymmetries are , , , and . The measurements of are the most precise to date and are in good agreement with previous results, as is the measurement of . The measurement of for is the first for this mode, and the value is consistent with Standard Model expectations.