Abstract
Exact exchange degeneracy, a property of the planar S matrix, is not a feature of the physical world. G parity, an exact symmetry of strong interactions, fails to be maintained by the discontinuities of the planar S matrix. This paper examines the connection between these two conflicting concepts and shows how calculations of exchange-degeneracy breaking may be based on G parity. The relation of G parity to the cylinder and torus components of the topological expansion is a central feature. We apply our arguments to ρ-A2 splitting and justify the use of an unsubtracted dispersion relation for αA2-αρ. Our analysis of the dispersion relation reveals a dominant role for the ππ channel.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3433-3440 |
| Number of pages | 8 |
| Journal | Physical Review D |
| Volume | 15 |
| Issue number | 11 |
| DOIs | |
| State | Published - 1977 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
G parity and the breaking of exchange degeneracy. / Chew, G. F.; Rosenzweig, Carl.
In: Physical Review D, Vol. 15, No. 11, 1977, p. 3433-3440.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - G parity and the breaking of exchange degeneracy
AU - Chew, G. F.
AU - Rosenzweig, Carl
PY - 1977
Y1 - 1977
N2 - Exact exchange degeneracy, a property of the planar S matrix, is not a feature of the physical world. G parity, an exact symmetry of strong interactions, fails to be maintained by the discontinuities of the planar S matrix. This paper examines the connection between these two conflicting concepts and shows how calculations of exchange-degeneracy breaking may be based on G parity. The relation of G parity to the cylinder and torus components of the topological expansion is a central feature. We apply our arguments to ρ-A2 splitting and justify the use of an unsubtracted dispersion relation for αA2-αρ. Our analysis of the dispersion relation reveals a dominant role for the ππ channel.
AB - Exact exchange degeneracy, a property of the planar S matrix, is not a feature of the physical world. G parity, an exact symmetry of strong interactions, fails to be maintained by the discontinuities of the planar S matrix. This paper examines the connection between these two conflicting concepts and shows how calculations of exchange-degeneracy breaking may be based on G parity. The relation of G parity to the cylinder and torus components of the topological expansion is a central feature. We apply our arguments to ρ-A2 splitting and justify the use of an unsubtracted dispersion relation for αA2-αρ. Our analysis of the dispersion relation reveals a dominant role for the ππ channel.
UR - http://www.scopus.com/inward/record.url?scp=35949032429&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35949032429&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.15.3433
DO - 10.1103/PhysRevD.15.3433
M3 - Article
AN - SCOPUS:35949032429
VL - 15
SP - 3433
EP - 3440
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 11
ER -