scholarly journals Charge Radii and Quadrupole Moments of the Low-Lying Baryons in the Chiral Constituent Quark Model

2013 ◽  
Vol 2013 ◽  
pp. 1-17 ◽  
Author(s):  
Neetika Sharma ◽  
Harleen Dahiya
Keyword(s):  
Symmetry Breaking ◽  
Phenomenological Models ◽  
Quark Model ◽  
Constituent Quark ◽  
Experimental Studies ◽  
Constituent Quark Model ◽  
Qualitative Description ◽  
Quadrupole Moments ◽  
Charge Radii ◽  
The One

The chiral constituent quark model (χCQM) with general parameterization method (GPM) has been formulated to calculate the charge radii of the spin1/2+octet and3/2+decuplet baryons and quadrupole moments of the spin3/2+decuplet baryons and spin3/2+→1/2+transitions. The implications of such a model have been investigated in detail for the effects of symmetry breaking and GPM parameters pertaining to the one-, two-, and three-quark contributions. Our results are not only comparable with the latest experimental studies but also agree with other phenomenological models. It is found that theχCQM is successful in giving a quantitative and qualitative description of the charge radii and quadrupole moments.

CHARGE RADII OF SPIN $\frac{1}{2}^+$ AND SPIN $\frac{3}{2}^+$ CHARMED BARYONS IN THE CHIRAL CONSTITUENT QUARK MODEL

2013 ◽  
Vol 28 (14) ◽  
pp. 1350052 ◽  
Author(s):  
NEETIKA SHARMA ◽  
HARLEEN DAHIYA
Keyword(s):  
Symmetry Breaking ◽  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Qualitative Description ◽  
Charmed Baryons ◽  
Charge Radii ◽  
Parametrization Method ◽  
The One

The chiral constituent quark model (χCQM) with general parametrization method (GPM) has been extended to calculate the charge radii of the charmed spin [Formula: see text] and spin [Formula: see text] baryons. The implications of such a model have been investigated for the effects of symmetry breaking and GPM parameters pertaining to the one-, two- and three-quark contributions. It is found that the χCQM along with these effects is successful in giving a quantitative and qualitative description of the charge radii of charmed baryons. In particular, it is able to account for the nonzero values of charge radii for the neutral charmed baryons.

Charge radii of octet and decuplet baryons in chiral constituent quark model

Pramana ◽  
2013 ◽  
Vol 81 (3) ◽  
pp. 449-465 ◽  
Author(s):  
NEETIKA SHARMA ◽  
HARLEEN DAHIYA
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Charge Radii

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

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 An overview of the hypercentral constituent quark model

2003 ◽  
Vol 50 (2) ◽  
pp. 263-272 ◽  
Author(s):  
M.M Giannini ◽  
E Santopinto ◽  
A Vassallo
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model

scholarly journals Electromagnetic form factors and the hypercentral constituent quark model

2007 ◽  
Vol 76 (6) ◽  
Author(s):  
M. De Sanctis ◽  
M. M. Giannini ◽  
E. Santopinto ◽  
A. Vassallo
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Form Factors ◽  
Constituent Quark Model ◽  
Electromagnetic Form Factors
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