Partial-wave analysis of $\tau^-\to\pi^-\pi^-\pi^+\nu_\tau$ at Belle
| Autor: | Rabusov, Andrei, Greenwald, Daniel, Paul, Stephan |
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| Rok vydání: | 2023 |
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| Druh dokumentu: | Working Paper |
| Popis: | We present preliminary results of a partial-wave analysis of $\tau^-\to\pi^-\pi^-\pi^+\nu_\tau$ in data from the Belle experiment at the KEKB $\mathrm{e}^+\mathrm{e}^-$ collider. We demonstrate the presence of the $\mathrm{a}_1(1420)$ and $\mathrm{a}_1(1640)$ 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. Comment: 4 pages, 2 figures, The 20th International Conference on Hadron Spectroscopy and Structure (HADRON 2023) |
| Databáze: | arXiv |
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