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FK/Fpi from the Budapest-Marseille-Wuppertal Collaboration

Based on a series of lattice calculations we determine the ratio FK/Fpi in QCD. With experimental data from kaon decay and nuclear double beta decay, we obtain a precise determination of |Vus|. Our simulation includes 2+1 flavours of sea quarks, with three lattice spacings, large volumes and a simulated pion mass reaching down to about 190 MeV for a full control over the systematic uncertainties.

preprint2011arXivOpen access
A. RamosS. DurrZ. FodorC. HoelblingS. D. KatzS. KriegT. KurthL. LellouchT. LippertK. K. Szabo
hep-phhep-lat
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Open access10 authors2 topics
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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A. RamosS. DurrZ. FodorC. HoelblingS. D. KatzS. KriegT. KurthL. LellouchT. LippertK. K. Szabo

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