6533b82efe1ef96bd1293e48
RESEARCH PRODUCT
General analysis of weak decay form factors in heavy to heavy and heavy to light baryon transitions
Michael KramerDong-sheng LiuF. HussainSalam TawfiqJürgen G. Körnersubject
PhysicsQuarkNuclear and High Energy PhysicsParticle physicsBethe–Salpeter equationField (physics)Nuclear TheoryHigh Energy Physics::PhenomenologyForm factor (quantum field theory)Elementary particleNuclear physicsBaryonsymbols.namesakesymbolslcsh:QC770-798Feynman diagramlcsh:Nuclear and particle physics. Atomic energy. RadioactivityHigh Energy Physics::ExperimentNuclear ExperimentWave functiondescription
We present a complete analysis of the heavy to heavy and heavy to light baryon semi-leptonic decays in the heavy quark effective theory within the framework of a Bethe-Salpeter (BS) approach and demonstrate the equivalence of this approach to other work in the field. We present in a compact form the baryon BS amplitudes which incorporate the symmetries manifest in the heavy quark limit and which also show clearly the light quark dynamics. A similar form of the BS amplitude is presented for light baryons. Using the BS amplitudes, the heavy to heavy and heavy to light semi-leptonic baryon decays are considered. As expected there is a dramatic reduction in the number of form factors. An advantage of our BS approach is demonstrated where the form factors are written as loop integrals which in principle can be calculated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-02-01 | Nuclear Physics B |