Precision measurement of the form factors of the charged kaon semileptonic decays K±πl3±K^\pm \rightarrow \pi^\pm_{l3}

Collaboration
for the collaboration.
Mar 20, 2018
5 pages
Published in:
  • PoS EPS-HEP2017 (2018) 235
Contribution to:
  • Published: Mar 20, 2018 by SISSA
Experiments:

Citations per year

20162017201801
Abstract: (PoS)
The NA48/2 experiment has presented a final result of the charged kaon semileptonic decays form factors measurement based on 4.28 million K±π0e±νK^{\pm}\rightarrow \pi^0 e^{\pm}\nu (Ke3_{e3}) and 2.91 million K±π0μ±νK^{\pm}\rightarrow \pi^0 \mu^{\pm}\nu (Kμ3_{\mu 3}) selected decays, collected in 2004. The result is competitive with other measurements in (Kμ3_{\mu 3}) mode and has a smallest uncertainty for (Ke3_{e3}), that leads to the most precise combined (Kl3_{\it{l}3}) result and allows to reduce the form factor uncertainty on the extraction of |VUS_{US}|.
  • talk: Venice 2017/07/05
  • K: secondary beam
  • K: semileptonic decay
  • K: form factor
  • form factor: precision measurement
  • form factor: semileptonic decay
  • NA48
  • CERN SPS
  • experimental results
  • K+ --> pi0 positron neutrino/e