6533b836fe1ef96bd12a07e2
RESEARCH PRODUCT
QCD sum rule calculation ofK ℓ3 form factors
Tobias HurthRalf Bornsubject
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 physicsdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-09-01 | Zeitschrift für Physik C Particles and Fields |