Quark mass differences and isospin violation in the pion-nucleon coupling constants

1989 ◽  
Vol 39 (5) ◽  
pp. 2054-2056 ◽  
Author(s):  
Véronique Bernard ◽  
Ulf-G. Meissner
Keyword(s):  
Quark Mass ◽  
Coupling Constants ◽  
Isospin Violation ◽  
Pion Nucleon

Radiative Corrections to Pion-Nucleon Coupling Constants

1972 ◽  
Vol 5 (8) ◽  
pp. 2069-2077 ◽  
Author(s):  
Z. Grossman ◽  
G. Preparata
Keyword(s):  
Coupling Constants ◽  
Radiative Corrections ◽  
Pion Nucleon

scholarly journals Isospin violation in low-energy pion–nucleon scattering revisited

2010 ◽  
Vol 833 (1-4) ◽  
pp. 18-103 ◽  
Author(s):  
Martin Hoferichter ◽  
Bastian Kubis ◽  
Ulf-G. Meißner
Keyword(s):  
Low Energy ◽  
Nucleon Scattering ◽  
Isospin Violation ◽  
Pion Nucleon

scholarly journals Masses of constituent quarks confined in open bottom hadrons

2014 ◽  
Vol 29 (38) ◽  
pp. 1450202 ◽  
Author(s):  
V. Borka Jovanović ◽  
D. Borka ◽  
P. Jovanović ◽  
J. Milošević ◽  
S. R. Ignjatović
Keyword(s):  
Hyperfine Interaction ◽  
Quark Mass ◽  
Constituent Quark ◽  
Coupling Constants ◽  
Quark Masses ◽  
Fitting Procedure ◽  
Average Color ◽  
Fitting Method ◽  
Hadron Masses ◽  
B Quark

We apply color-spin and flavor-spin quark–quark interactions to the meson and baryon constituent quarks, and calculate constituent quark masses, as well as the coupling constants of these interactions. The main goal of this paper was to determine constituent quark masses from light and open bottom hadron masses, using the fitting method we have developed and clustering of hadron groups. We use color-spin Fermi–Breit (FB) and flavor-spin Glozman–Riska (GR) hyperfine interaction (HFI) to determine constituent quark masses (especially b quark mass). Another aim was to discern between the FB and GR HFI because our previous findings had indicated that both interactions were satisfactory. Our improved fitting procedure of constituent quark masses showed that on average color-spin (FB) HFI yields better fits. The method also shows the way how the constituent quark masses and the strength of the interaction constants appear in different hadron environments.

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