Hadronic transitions between heavy-quark states in quantum chromodynamics
1980; American Physical Society; Volume: 22; Issue: 7 Linguagem: Inglês
10.1103/physrevd.22.1652
ISSN1538-4500
Autores Tópico(s)High-Energy Particle Collisions Research
ResumoA general theory is formulated in quantum chromodynamics for hadronic transitions between heavy-quark states. Many predictions follow simply from the tensor properties of the multipoles that dominate in a transition. When a transition involves only soft-pion emission, partial conservation of the axial-vector current provides information on the mass and angular distributions of the pions. Applications to hadronic transitions within the $\ensuremath{\Upsilon}$ family are presented.
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