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HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data
by Alberto Lusiani
This Submission thread is now published as
|Authors (as registered SciPost users):||Alberto Lusiani|
|Preprint Link:||https://arxiv.org/abs/1811.06470v2 (pdf)|
|Date submitted:||2018-12-17 01:00|
|Submitted by:||Lusiani, Alberto|
|Submitted to:||SciPost Physics Proceedings|
|Proceedings issue:||The 15th International Workshop on Tau Lepton Physics (TAU2018)|
We report the status of the Heavy Flavour Averaging Group (HFLAV) averages of the $\tau$ lepton measurements We then update the latest published HFLAV global fit of the $\tau$ lepton branching fractions (Spring 2017) with recent results by BABAR. We use the fit results to update the Cabibbo-Kobayashi-Maskawa (CKM) matrix element Vus measurements with the $\tau$ branching fractions. We combine the direct $\tau$ branching fraction measurements with indirect predictions using kaon branching fractions measurements to improve the determination of Vus using $\tau$ branching fractions. The Vus determinations based on the inclusive branching fraction of $\tau$ to strange final states are about $3\sigma$ lower than the Vus determination from the CKM matrix unitarity.
Published as SciPost Phys. Proc. 1, 001 (2019)
Author comments upon resubmission
"References: blank space is missing between the journal and the volume"
I checked the bibliography references and found that there are spaces between the journal and volume numbers. I am using the SciPost bibliography style, which uses the common convention that for journals like Phys.Rev.D the "D" is attached to the volume number. I think that that should stay so for SciPost proceedings.
List of changes
Two typos fixed.
Results on τ→K/π(n)π0ντ are now all with 3 decimal places.
Revision from ""is superseded" to "has been superseded"
Submission & Refereeing History
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