# Non-standard interactions in $\tau^- \to (\pi^-\eta,\pi^-\pi^0)\nu_{\tau}$ decays

### Submission summary

 As Contributors: Gabriel Lopez Castro Preprint link: scipost_201811_00020v1 Date accepted: 2019-01-08 Date submitted: 2018-11-15 Submitted by: Lopez Castro, Gabriel Submitted to: SciPost Physics Proceedings Domain(s): Theoretical Subject area: High-Energy Physics - Theory

### Abstract

Originally thought as clean processes to study the hadronization of the weak currents, semileptonic tau lepton decays can be useful to set constraints on non-standard (NS) weak interactions. In this talk we summarize our recent studies on the effects of NS interactions in $\tau^- \to (\pi^-\pi^0,\pi^-\eta)\nu_{\tau}$ decays. We find that experimental data on these decays provide strong constraints on NS scalar and tensor interactions, respectively. Further improved measurements at Belle II and a better knowledge of necessary tensor and scalar form factors will allow to set limits on these NS interactions that are similar or better to contraints obtained from other low-energy processes

###### Current status:
Publication decision taken: accept

### Submission & Refereeing History

Submission scipost_201811_00020v1 (15 November 2018)

## Invited Reports on this Submission

Toggle invited reports view

### Report

The conference contribution under consideration is entirely based on the two reviewed journal publications JHEP 1712 (2017) 027 as well as JHEP 1811 (2018) 038. It is well written and clear. Hence, in my opinion there is no need for a more detailed report.

• validity: -
• significance: -
• originality: -
• clarity: -
• formatting: -
• grammar: -