|Vus| is computed using the exclusive τ lepton branching fractions B(τ− → K−ντ) and B(τ− → π−ντ) and using the inclusive τ branching fraction to all “strange” final states, B(τ− → Xs−ντ), computed as the sum of all the relevant exclusive branching fractions. Assuming the Standard Model, the kaon branching fractions measurements B(K+ → `+ν`) and B(K+ → `+π0ν`) with ` = e, µ are used to improve the experimental determination of B(τ− → Xs−ντ) and |Vus|.
Improved determination of |Vus| with τ decays
Lusiani, Alberto
2020
Abstract
|Vus| is computed using the exclusive τ lepton branching fractions B(τ− → K−ντ) and B(τ− → π−ντ) and using the inclusive τ branching fraction to all “strange” final states, B(τ− → Xs−ντ), computed as the sum of all the relevant exclusive branching fractions. Assuming the Standard Model, the kaon branching fractions measurements B(K+ → `+ν`) and B(K+ → `+π0ν`) with ` = e, µ are used to improve the experimental determination of B(τ− → Xs−ντ) and |Vus|.File in questo prodotto:
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EPS-HEP2019_217.pdf
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