Fermi decay of higher spin particles
RE Behrends, C Fronsdal - Physical Review, 1957 - APS
The explicit form for the spin projection operators introduced by Fronsdal is calculated for
arbitrary spin and applied to first-order processes involving four fermions. The matrix …
arbitrary spin and applied to first-order processes involving four fermions. The matrix …
Theory of the Fermi interaction
RP Feynman, M Gell-Mann - Physical Review, 1958 - APS
The representation of Fermi particles by two-component Pauli spinors satisfying a second
order differential equation and the suggestion that in β decay these spinors act without …
order differential equation and the suggestion that in β decay these spinors act without …
Determination of spin and decay parameters of fermion states
N Byers, S Fenster - Physical Review Letters, 1963 - APS
For given I., the 2I+ 1 parameters tr are com-ponents of an irreducible tensor~ of rank I. This
means that under a spatial rotation the tr M obey the same transformation law as the …
means that under a spatial rotation the tr M obey the same transformation law as the …
Some generalizations of the Foldy-Wouthuysen transformation
KM Case - Physical Review, 1954 - APS
A canonical transformation similar to that given by Foldy and Wouthuysen is obtained for the
spin zero and one theories. For free particles positive and negative charge states are …
spin zero and one theories. For free particles positive and negative charge states are …
Two-body problem in quantum field theory
C Fronsdal, RW Huff - Physical Review D, 1971 - APS
We study an approach to the relativistic two-body problem that represents a considerable
improvement of the Bethe-Salpeter equation. The main advantages are the improved …
improvement of the Bethe-Salpeter equation. The main advantages are the improved …
Relativistic Treatment of Spin Independence
KJ Barnes - Physical Review Letters, 1965 - APS
=—6~ vpyvvPP~ and the tensor (sL'~ v sE p vppppp 5p~ devised by Calogero However, if
now some interaction is envisaged, the above considerations must be further ap-plied to …
now some interaction is envisaged, the above considerations must be further ap-plied to …
The universal Fermi interaction
EJ Konopinski, HM Mahmoud - Physical Review, 1953 - APS
On the basis of the hypothesis that the same form of interaction acts among any spin-½
particles, it is interesting to apply the interaction law found for β decay to the muon …
particles, it is interesting to apply the interaction law found for β decay to the muon …
Interaction between four half-spin particles and the decay of the μ-meson
L Michel - Proceedings of the Physical Society. Section A, 1950 - iopscience.iop.org
The general direct coupling between four fermions is studied. It is a linear combination of the
five invariants used in β-decay theory. Altering the order of the particles in the Hamiltonian …
five invariants used in β-decay theory. Altering the order of the particles in the Hamiltonian …
Reflection properties of spin ½ fields and a universal Fermi-type interaction
CN Yang, J Tiomno - Physical Review, 1950 - APS
Reflection Properties of Spin 1/2 Fields and a Universal Fermi-Type Interaction Page 1 PH
YSICAL REVI, E% VOLUME 79, NUMBER 3 AUGUST l, l 950 Re6ection Properties of Spin q …
YSICAL REVI, E% VOLUME 79, NUMBER 3 AUGUST l, l 950 Re6ection Properties of Spin q …
Feynman rules for any spin. III
S Weinberg - Physical Review, 1969 - APS
Free fields, which transform according to general irreducible representations of the
homogeneous Lorentz group, are constructed for any spin. The most general interactions …
homogeneous Lorentz group, are constructed for any spin. The most general interactions …