Precision tests of the Standard Model with leptonic and semileptonic kaon decays
FlaviaNet Working Group on Kaon Decays, M. Antonelli, V. Cirigliano,, P. Franzini, S. Glazov, R. Hill, G. Isidori, F. Mescia, M. Moulson, M., Palutan, E. Passemar, M. Piccini, M. Veltri, O. Yushchenko, R.Wanke
TL;DR
This paper performs a comprehensive analysis of kaon decay data to precisely determine the CKM matrix element Vus and tests the Standard Model's validity through various decay processes.
Contribution
It provides the first global analysis combining recent experimental results with theoretical constraints to accurately measure Vus and test the Standard Model.
Findings
Precise value of Vus obtained
Stringent tests of the Standard Model performed
Consistency of decay data with theoretical predictions
Abstract
We present a global analysis of leptonic and semileptonic kaon decays data, including all recent results by BNL-E865, KLOE, KTeV, ISTRA+, and NA48. Experimental results are critically reviewed and combined, taking into account theoretical (both analytical and numerical) constraints on the semileptonic kaon form factors. This analysis leads to a very accurate determination of Vus and allows us to perform several stringent tests of the Standard Model.
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