The almost conserved current hypothesis and pseudo-scalar meson theory

1963 ◽  
Vol 27 (3) ◽  
pp. 660-667 ◽  
Author(s):  
W. M. Frank ◽  
W. S. Hellman ◽  
G. H. Mullen
Keyword(s):  
Scalar Meson ◽  
Meson Theory ◽  
Conserved Current ◽  
Pseudo Scalar

Meson theory and nuclear matter

1955 ◽  
Vol 230 (1181) ◽  
pp. 277-286 ◽  
Keyword(s):  
Nuclear Matter ◽  
Scalar Meson ◽  
Natural Basis ◽  
Interparticle Forces ◽  
Saturation Properties ◽  
Meson Theory ◽  
Electromagnetic Interactions ◽  
Consistent Field ◽  
Self Consistent Field ◽  
Pseudo Scalar

An attempt is made to justify the use of the concept of a ‘mesic fluid’ in connexion with the structure of nuclear matter. A transformation is made of the usual symmetric pseudo-scalar meson theory to bring into evidence certain saturation properties, which provide a natural basis for the use of a 'self-consistent’ field in the discussion of nuclear structure. Fluctuations about this semi-classical saturated state will give rise to residual interparticle forces within the nucleus, and are also briefly considered in relation to electromagnetic interactions.

A non-linear field theory

1961 ◽  
Vol 260 (1300) ◽  
pp. 127-138 ◽  
Keyword(s):  
Field Theory ◽  
Finite Energy ◽  
Unified Field Theory ◽  
Unified Field ◽  
Meson Theory ◽  
Static Solutions ◽  
Derivative Type ◽  
Type Coupling ◽  
Conserved Current ◽  
Linear Field

A unified field theory of mesons and their particle sources is proposed and considered in its classical aspects. The theory has static solutions of a singular nature, but finite energy,characterized by spin directions; the number of such entities is a rigorously conserved constant of motion; they interact with an external meson field through a derivative-type coupling with the spins, akin to the formalism of strong-coupling meson theory. There is a conserved current identifiable with isobaric spin, and another that may be related to hyper-charge. The postulates include one constant of the dimensions of length, and another that is conjectured necessarily to have the value ђc , or perhaps ½ ђc , in the quantized theory.

N* PHYSICS AT MAMI — RESULTS AND PERSPECTIVES

2014 ◽  
Vol 26 ◽  
pp. 1460051
Author(s):  
MICHAEL OSTRICK
Keyword(s):  
Partial Wave ◽  
Scalar Meson ◽  
Crystal Ball ◽  
Preliminary Results ◽  
Model Independent ◽  
Pseudo Scalar ◽  
Photo Production

New measurements of transverse target and beam-target asymmetries in pion photo-production were performed using the Crystal Ball at the Mainz Microtron MAMI. Preliminary results are discussed in the context of model-independent partial wave analyses for pseudo-scalar meson photo-production below Ecm = 2 GeV.

Interactions between Neutron and Proton

1950 ◽  
Vol 3 (4) ◽  
pp. 519
Author(s):  
P Swan
Keyword(s):  
Short Range ◽  
Scalar Meson ◽  
High Energy ◽  
Low Energy ◽  
Scattering Data ◽  
Energy Data ◽  
Central Potential ◽  
Proton Interaction ◽  
Short Range Repulsion ◽  
Pseudo Scalar

An attempt has been made to find an interaction between neutron and proton which will account for not only the binding energy and quadripole moment of the deuteron and the low energy scattering data, but also the results of the experiments on the scattering of 90 MeV. neutrons by protons. Three types of modification of the triplet neutron-proton interaction have been used which embody the following features : (1) A non-central potential of spherical well form, whose radius of interaction is varied. (2) A non-central potential whose form is closer to that of the pseudo-scalar meson potential than the usual Rarita-Schwinger form, but which does not possess the objectionable singularities of the former. (3) The inclusion of a large short-range repulsion. In each case exchange forces of the usual types have been used. The results obtained, like those of other workers in this field using different forms of interaction, fail to agree with the high energy data.

Neutral-scalar-meson theory in the static limit

1968 ◽  
Vol 54 (3) ◽  
pp. 563-573
Author(s):  
D. W. Schlitt
Keyword(s):  
Scalar Meson ◽  
Static Limit ◽  
Meson Theory ◽  
Neutral Scalar
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