Regular Article - Theoretical Physics
The hadronic decay and the axial vector mixing angle
Niigata University, 8050 Ikarashi 2-no-cho, Nishi-ku, 950-2181, Niigata, Japan
2 Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
Accepted: 30 May 2021
Published online: 7 June 2021
We propose to measure the decay in order to determine the axial vector mixing angle . We derive, for the first time, the differential decay rate formula for this decay mode. Using the obtained result, we perform a sensitivity study for the Belle (II) experiment. We will show that the spectrum of the decay can discriminate the two solutions or observed in the other measurements.
© The Author(s) 2021
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