Overall determination of the CKM matrix
S. Plaszczynski, M.H Schune
TL;DR
This paper presents a comprehensive statistical analysis of the CKM matrix, addressing uncertainties, combining multiple observables, and deriving implications for rare kaon decays within the Standard Model.
Contribution
It introduces a statistically sound method for combining CKM observables and provides updated constraints based on recent experimental data.
Findings
Constraints on CKM matrix elements and fB*sqrt(Bb)
Implications for rare kaon decays K -> pi nu anti-nu
Analysis of recent measurements like jpsi-KS CP asymmetry
Abstract
We discuss the problem of theoretical uncertainties in the combination of observables related to the CKM matrix elements and propose a statistically sensible method for combining them. The overall fit is performed on present data, and constraints on the matrix elements are presented as well as on fB*sqrt(Bb). We then explore the implications of recent measurements and developments: jpsi-KS CP asymmetry, epsilon_prime/epsilon and B -> K pi branching fractions. Finally, we extract from the overall fit the Standard Model expectations for the rare kaon decays K -> pi nu anti-nu.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Neutrino Physics Research