Aspects of the Current Algebra Approach |
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a³x Adler Adler-Weisberger calculation algebra of currents amplitude approximation assume assumption axial vector current B.W. Lee baryon BHAILE ÁTHA CLIATH Cabibbo Calif changing axial current continuum contribution cross-sections CURRENT ALGEBRA APPROACH current commutation relations current operators d³x Dashen and Gell-Mann deduce divergenceless Dublin Institute Elementary Particles equal equations finite Fubini-Furlan technique Hamiltonian higher symmetry group infinite momentum invariance isospin Lee-Dashen-Gell-Mann procedure left hand side leptonic Letters 16 Lie algebra Lie group limit magnetic moments matrix elements measurable local operators N.Y. Stockton neutron nucleon Nuovo Cimento obtain Okubo orbital angular momentum PAMPHLET BINDER Syracuse PCAC Phys pion decay Poincaré group proton quantity quark quark model renormalization representation right hand side Schwinger term single particle space integrals spatial momentum strangeness changing axial sum rule take the matrix theory weak interaction Weisberger zero momentum μμ