Selection Rules and Neutral Currents in Semi-Leptonic Weak Processes

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概要

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• It is pointed out that two selection rules, (i) ΔS=ΔQ for strangeness-changing processes and (ii) |ΔQ|≦1, successfully describe the present experimental situation of semi-leptonic weak processes concerning their changes in charge and strangeness of hadrons involved. From a generalization of the known isospin selection rules for ΔS=0, ΔQ=±1 and AS=AQ= ±1 processes it is conjectured that ΔS=ΔQ=0 processes might obey the rule ΔI=0. Invoking the quark-parton model, (V, A) structure of ΔS=ΔQ=0 interaction with I=0 is examined. It is shown that, in a model in which the neutral-current is simply the baryonic and/or hypercharge current, the cross-section ratio of ν_μ+p⇾ν_μ+p to ν_μ+n⇾μ^-+p near the forward direction may be as large as 1.2.

• 理論物理学刊行会の論文
• 1975-04-25

著者

• Tsai S.y.

  Department Of Physics And Atomic Energy Research Institute College Of Science And Technology Nihon U

• Tsai S.y

  Department Of Physics Nihon University : Department Of Physics Dalhousie University Halifax N.s.

• TSAI S.Y

  Department of Physics, Nihon University : Department of Physics, Dalhousie University, Halifax, N.S.

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• Colored Baryons Bound by Three-Body Forces
• The Generalized Stueckelberg Formalism and the Glashow-Weinberg-Salam Electroweak Model
• A Phenomenological Study of Violation of CP and CPT Symmetries in the Neutral Kaon System
• A Phenomenological Study of Violation of PC Invariance in Decays of K^0 and K^^-^0
• Search for Color-Excitation in Single- and Di-Muon Neutrino-Production
• Meso-Strong and Weak Interactions in the SU(3)閑SU(3)" Scheme of the Three-Triplet Model
• Interpretation of the ψ Particles in the Framework of the Three-Triplet Model
• Selection Rules and Neutral Currents in Semi-Leptonic Weak Processes

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