scholarly journals Quark model analysis of the charge symmetry breaking in nuclear force

2003 ◽  
Vol 68 (2) ◽  
Author(s):  
Takashi Nasu ◽  
Makoto Oka ◽  
Sachiko Takeuchi
Keyword(s):  
Symmetry Breaking ◽  
Quark Model ◽  
Nuclear Force ◽  
Model Analysis ◽  
Charge Symmetry Breaking ◽  
Charge Symmetry

SUBSTRUCTURE EFFECT ON ρ-ω MIXING IN CHARGE-SYMMETRY VIOLATION

1992 ◽  
Vol 07 (32) ◽  
pp. 3037-3043 ◽  
Author(s):  
T. GOLDMAN ◽  
J.A. HENDERSON ◽  
A.W. THOMAS
Keyword(s):  
Symmetry Breaking ◽  
Quark Model ◽  
Quark Mass ◽  
Mass Shell ◽  
Mass Difference ◽  
Charge Symmetry Breaking ◽  
Symmetry Violation ◽  
Charge Symmetry ◽  
A Charge ◽  
Simple Quark Model

In generating a charge-symmetry breaking potential using ρ-ω mixing it is usually assumed that the mixing amplitude is constant (at the on-mass-shell value). Since the exchanged meson is actually far off-shell one must question the validity of this assumption. By constructing a simple quark model in which the mixing is generated by the u-d quark mass difference, we find that the assumption seems to be a very poor one.

THE EFFECTS OF NUCLEON QUARK SUBSTRUCTURE ON THE 3He-3H ELECTROMAGNETIC MASS DIFFERENCE

1989 ◽  
Vol 04 (15) ◽  
pp. 1403-1408 ◽  
Author(s):  
KIM MALTMAN
Keyword(s):  
Binding Energy ◽  
Symmetry Breaking ◽  
Quark Model ◽  
Mass Difference ◽  
Energy Difference ◽  
Relativistic Quark Model ◽  
Electromagnetic Mass ◽  
Charge Symmetry Breaking ◽  
Charge Symmetry ◽  
Quark Substructure

It is argued that the neglect of intrinsic quark motions within the nucleon implicit in traditional nuclear estimates of magnetic contributions to the A=3 binding energy difference produces an underestimate of the size of these contributions. A schematic non-relativistic quark model calculation demonstrates that the magnitude of the discrepancy is unlikely to be neglible, and that the sign of the effect is such as to require an increase in charge symmetry breaking from other sources.

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