|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|.
2020
Settore FIS/01 - Fisica Sperimentale
2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019
Ghent, Belgium
10-17 July 2019
European Physical Society Conference on High Energy Physics (EPS-HEP2019) - Flavour Physics and CP Violation
Sissa Medialab Srl
Branching fractions; Experimental determination; Final state; The standard mode; High energy physics
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/139384
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