Abstract
We present preliminary results of a partial-wave analysis of τ− → π−π−π+ντ in data from the BELLE experiment at the KEKB e+e− collider. We demonstrate the presence of the a1(1420) and a1(1640) resonances in tauon decays and measure their masses and widths. We also present validation of our findings using a model-independent approach. Our results can improve modeling in simulation studies necessary for measuring the tauon electric and magnetic dipole moments and Michel parameters.
Original language | English |
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Article number | 154 |
Journal | Nuovo Cimento della Societa Italiana di Fisica C |
Volume | 47 |
Issue number | 4 |
DOIs | |
State | Published - 2024 |