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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.07986 |
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Table of Contents:
- It is shown that the processes $e^+ e^- \to π^+ π^-$ and $τ^- \to π^- π^0 ν_τ$ can be described in a unified approach in satisfactory agreement with experiment using the vector coupling constant $g_ρ = 6$. In this case, in addition to quark loops, it is also necessary to take into account meson loops corresponding to the next order in $1/N_c$. These loops must be taken into account when describing the $γ(W) \to ρ$ transition, as well as in interaction of mesons in the final state.