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arXiv · 2209.15537

Tension between $e^+e^-\toηπ^-π^+$ and $τ^-\toηπ^-π^0ν_τ$ data and non-standard interactions

Saray Arteaga·Ling-Yun Dai·Adolfo Guevara·Pablo Roig
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Abstract

We show the discrepancy between the isospin-rotated $e^+e^-\toηπ^-π^+$ cross-section -- measured by various collaborations -- and the Belle $τ^-\toηπ^-π^0ν_τ$ spectrum, which cannot be explained by heavy new physics non-standard interactions. We give for the first time the framework needed to study these beyond the standard model contributions in three-meson tau decays.

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Saray Arteaga, Ling-Yun Dai, Adolfo Guevara, Pablo Roig. 2022-10-24. Tension between $e^+e^-\toηπ^-π^+$ and $τ^-\toηπ^-π^0ν_τ$ data and non-standard interactions. https://doi.org/10.1103/physrevd.106.096016

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