From constituent quark to current quark: Origin of the European Muon Collaboration effect

1992 ◽  
Vol 45 (3) ◽  
pp. 1397-1399 ◽  
Author(s):  
W. Zhu ◽  
L. Qian
Keyword(s):  
Constituent Quark ◽  
European Muon Collaboration ◽  
Current Quark

CHIRAL SYMMETRY BREAKING AND FORMULAS OF QUARK CONVERSION FOR LOW-ENERGY HADRONIC MATRIX ELEMENTS

1993 ◽  
Vol 08 (05) ◽  
pp. 853-872 ◽  
Author(s):  
ANDREI N. IVANOV
Keyword(s):  
Chiral Symmetry ◽  
Constituent Quark ◽  
Chiral Symmetry Breaking ◽  
Low Energy ◽  
Collective Excitations ◽  
Spontaneous Breaking ◽  
Matrix Elements ◽  
Energy Approximation ◽  
Meson States ◽  
Current Quark

By using the extended Nambu-Jona-Lasinio model for the low-energy approximation of QCD we derive the formulas, being due to spontaneous breaking of chiral symmetry and bosonization, and allowing to express matrix elements of any operator with current-quark fields in the definition in terms of matrix elements of this operator determined via constituent-quark fields interacting with low-lying meson states appearing as [Formula: see text]-collective excitations, which have the self-interactions too.

CONSTITUENT QUARK MASS IN RELATION TO CURRENT QUARK MASS

1995 ◽  
pp. 252-254
Author(s):  
SYUREI IWAO
Keyword(s):  
Quark Mass ◽  
Constituent Quark ◽  
Current Quark Mass ◽  
Constituent Quark Mass ◽  
Current Quark

Current-quark masses from a relativistic constituent-quark model

1989 ◽  
Vol 39 (3) ◽  
pp. 873-877 ◽  
Author(s):  
Jagannath Thakur
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Quark Masses ◽  
Current Quark

scholarly journals Low-lying configurations in a non-relativistic constituent quark model

2007 ◽  
Vol 34 (7) ◽  
pp. 1771-1782 ◽  
Author(s):  
W L Wang ◽  
F Huang ◽  
Z Y Zhang ◽  
Y W Yu ◽  
F Liu
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model

Nucleon structure functions from constituent quark

1999 ◽  
Vol 79 (1-3) ◽  
pp. 247-249 ◽  
Author(s):  
Ali N. Khorramian ◽  
Firooz Arash
Keyword(s):  
Constituent Quark ◽  
Structure Functions ◽  
Nucleon Structure

On the constituent quark structure

1995 ◽  
Author(s):  
Adam Szczepaniak ◽  
Chueng-Ryong Ji ◽  
Stephen R. Cotanch
Keyword(s):  
Constituent Quark ◽  
Quark Structure

THE NLO QCD CALCULATION OF SEA QUARK DISTRIBUTIONS IN THE CORGI APPROACH, BASED ON THE CONSTITUENT QUARK MODEL

2007 ◽  
Vol 22 (24) ◽  
pp. 4519-4535 ◽  
Author(s):  
A. MIRJALILI ◽  
K. KESHAVARZIAN
Keyword(s):  
Quark Model ◽  
Mellin Transform ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Standard Approach ◽  
Unknown Parameters ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Physical Scale ◽  
Good Agreement

Sea quark distributions in the NLO approximation, based on the phenomenological valon model or constituent quark model are analyzed. We use the parametrized inverse Mellin transform technique to perform a direct fit with available experimental data and obtain the unknown parameters of the distributions. We try to extend the calculation to the NLO approximation for the singlet and nonsinglet cases in DIS phenomena. We do also the same calculation for electron–positron annihilation. The resulting sea distributions are effectively independent of the process used. The approach of complete RG improvement (CORGI) is employed and the results are compared with the standard approach of perturbative QCD in the [Formula: see text] scheme with a physical scale. The comparisons with data are in good agreement. As is expected, the results in the CORGI approach indicate a better agreement to the data than the NLO calculation in the standard approach.

scholarly journals Polarized structure functions in a constituent quark scenario

1998 ◽  
Vol 442 (1-4) ◽  
pp. 28-37 ◽  
Author(s):  
Sergio Scopetta ◽  
Vicente Vento ◽  
Marco Traini
Keyword(s):  
Constituent Quark ◽  
Structure Functions

scholarly journals FourthP11resonance predicted by the constituent quark model

2001 ◽  
Vol 64 (6) ◽  
Author(s):  
L. Theußl ◽  
R. F. Wagenbrunn
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model
Sign in / Sign up

Export Citation Format

Share Document