HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data
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-Kobay...
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2019-02-01
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| Series: | SciPost Physics Proceedings |
| Online Access: | https://scipost.org/SciPostPhysProc.1.001 |
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doaj-70c63511184c4082b209c792560aa42c2021-04-19T12:18:26ZengSciPostSciPost Physics Proceedings2666-40032019-02-01100110.21468/SciPostPhysProc.1.001HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton dataAlberto LusianiWe 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.https://scipost.org/SciPostPhysProc.1.001 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Alberto Lusiani |
| spellingShingle |
Alberto Lusiani HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data SciPost Physics Proceedings |
| author_facet |
Alberto Lusiani |
| author_sort |
Alberto Lusiani |
| title |
HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data |
| title_short |
HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data |
| title_full |
HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data |
| title_fullStr |
HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data |
| title_full_unstemmed |
HFLAV $τ$ branching fractions fit and measurements of Vus with $τ$ lepton data |
| title_sort |
hflav $τ$ branching fractions fit and measurements of vus with $τ$ lepton data |
| publisher |
SciPost |
| series |
SciPost Physics Proceedings |
| issn |
2666-4003 |
| publishDate |
2019-02-01 |
| description |
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. |
| url |
https://scipost.org/SciPostPhysProc.1.001 |
| work_keys_str_mv |
AT albertolusiani hflavtbranchingfractionsfitandmeasurementsofvuswithtleptondata |
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1721521238517481472 |