SciPost Submission Page
HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data
by Alberto Lusiani
- Published as SciPost Phys. Proc. 1 (2019)
|As Contributors:||Alberto Lusiani|
|Submitted by:||Lusiani, Alberto|
|Submitted to:||SciPost Physics Proceedings|
|Proceedings issue:||The 15th International Workshop on Tau Lepton Physics (Amsterdam, 2018-09)|
|Subject area:||High-Energy Physics - Experiment|
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.
Author comments upon resubmission
I applied all recommendations except this one:
"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Revision from ""is superseded" to "has been superseded"