Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-10-10
PoSHEP2005:287,2006
Physics
High Energy Physics
High Energy Physics - Experiment
prepared for the International Europhysics Conference on High Energy Physics July 21st-27th 2005, Lisboa, Portugal 5 pages, 3
Scientific paper
The most precise determination of Vus comes from semileptonic kaon decays. The KLOE experiment at DA\PhiNE the Frascati \phi-factory, has measured all the exeperimental inputs to Vus for both neutral and charged kaons. Preliminary results for BR(K^\pm\to\pi^0 e^\pm\nu) and BR(K^\pm\to\pi^0 \mu^\pm\nu), and for \tau_\pm are presented, together with measurements of the K_Le3 and K_L\mu3 decay BR, the K_Se3 decay BR and the K_L lifetime \tau_L. From our results for the 5 braching ratios and \tau_L we find Vus=0.2258\pm0.0022. We have also measured the fully inclusive K^+\mu2(\gamma) absolute branching ratio for which we obtain BR(K^+\to\mu\nu(\gamma))=0.6366\pm0.0017. Combining this value with recent lattice results for f_K/f_\pi gives Vus=0.2223\pm0.0026.
KLOE collaboration for the
Sciascia B.
No associations
LandOfFree
KLOE extraction of Vus from kaon decays and lifetimes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with KLOE extraction of Vus from kaon decays and lifetimes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and KLOE extraction of Vus from kaon decays and lifetimes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-505410