# Updated determinations of |V$_{us}$| with tau decays using new recent estimates of radiative corrections for light-meson leptonic decay rates

### Submission summary

 As Contributors: Alberto Lusiani Arxiv Link: https://arxiv.org/abs/2201.03272v2 (pdf) Date submitted: 2022-02-22 21:02 Submitted by: Lusiani, Alberto Submitted to: SciPost Physics Proceedings Proceedings issue: 16th International Workshop on Tau Lepton Physics (TAU2021) Academic field: Physics Specialties: High-Energy Physics - Phenomenology Approaches: Theoretical, Experimental, Phenomenological

### Abstract

We update the |V$_{us}$| determinations using the HFLAV 2018 report tau branching fraction results with recent new estimates of the $\pi\ell2$ and $K\ell2$ radiative corrections. There are minor changes of the central values and uncertainties.

###### Current status:
Editor-in-charge assigned

### Submission & Refereeing History

Submission 2201.03272v2 on 22 February 2022

## Reports on this Submission

### Report

The manuscript presents a relevant update of the $V_{us}$ determination from exclusive tau decays. I recommend its publication at SciPost after the author has considered implementing the few minor comments/suggestions described below.
I don't need to see the manuscript again.

### Requested changes

1- The second formula in page 2 contains a funny character "$\hbar$". It should be a typo.

2- The $\delta R_{\tau/P}$ corrections displayed in the third formula of page 2 have been recently re-evaluated in 2107.04603, 2112.01859, where slightly larger errors are claimed. This is worth mentioning and showing how numbers change.

3- The table in page 3 displays also the average with the inclusive determination (last row), but this is not clear neither from the table caption nor from the text, where one only mentions "all three determinations" (which ones?). A reference to the inclusive method could also be appropriate.

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