0000000000827807

AUTHOR

Ralf Born

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QCD sum rule calculation ofK ℓ3 form factors

1992

We present a combined finite energy sum rule (FESR) and analytic continuation by duality (ACD) calculation of the (neutral)K l3 decay. We confirm the Callan-Treiman relation and investigate the validity of a linear fit for the form factors. Furthermore, we obtain ζ=−0.1...−0.3, consistent with the mean experimental value ζ=−0.1±0.09.

Discrete mathematicsQuantum chromodynamicsPhysics and Astronomy (miscellaneous)Analytic continuationSum rule in integrationForm factor (quantum field theory)Astrophysics::Cosmology and Extragalactic AstrophysicsLinearity of differentiationRule of sumSum rule in quantum mechanicsQuantum field theoryEngineering (miscellaneous)MathematicsMathematical physicsZeitschrift für Physik C Particles and Fields
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