3–7 Apr 2017
University of Birmingham
Europe/London timezone

Precision measurement of the form factors of the charged kaon semileptonic decays $K^\pm_{l3}$

5 Apr 2017, 11:20
15m
West Building Lecture Theatre

West Building Lecture Theatre

WG4) Hadronic and Electroweak Observables WG4 Hadronic and Electroweak Observables

Speaker

Andrea Bizzeti (Universita e INFN, Firenze (IT))

Description

The NA48/2 experiment presents a final result of the charged kaon semileptonic decays form
factors measurement based on 4.28 million $K^\pm_{e3}$ and 2.91 million $K^\pm_{\mu 3}$ selected
decays collected in 2004. The result is competetive with other measurements in $K^\pm_{\mu 3}$
mode and has a smallest uncertainty for $K^\pm_{e3}$, that leads to the most precise
combined $K^\pm_{l3}$ result and allows to reduce the form factor uncertainty of $|V_{US}|$.

Primary authors

cristina Lazzeroni (university of Birmingham, UK) Andrea Bizzeti (Universita e INFN, Firenze (IT))

Presentation materials