Determination of vector meson properties by matching resonance saturation to a constituent quark model

We study on-shell decays of light vector meson resonances ρ, K* and ϕ in the framework of chiral constituent quark model using resummation calculations. Such studies are necessary for showing that dynamics described by chiral Lagrangian works well at this energy scale. The effective action is derived by a proper vertex method, where resummation of all orders of momentum expansion is accomplished. Also studied are the loop effects of pseudoscalar meson, which play an important role at this energy scale. The numerical results agree well with the experimental data. A new method to explore the chiral symmetry spontaneously breaking (CSSB) is proposed. It is found that the unitarity of the effective meson theory resulted from resummation derivations demands an upper-limit to the momentum of vector meson. This upper-limit, being critical point, is just the energy scale of CSSB, and is found to be flavor-dependent.

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Constraint on axial-vector meson mixing angle from the nonrelativistic constituent quark model

Physical Review D ◽

10.1103/physrevd.56.r1368 ◽

1997 ◽

Vol 56 (3) ◽

pp. R1368-R1372 ◽

Cited By ~ 28

Author(s):

L. Burakovsky ◽

T. Goldman

Keyword(s):

Vector Meson ◽

Quark Model ◽

Constituent Quark ◽

Axial Vector ◽

Constituent Quark Model ◽

Axial Vector Meson ◽

Mixing Angle ◽

Meson Mixing

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THE ELECTRIC AND MAGNETIC FORM FACTORS OF THE NEUTRON

Modern Physics Letters A ◽

10.1142/s0217732393001859 ◽

1993 ◽

Vol 08 (22) ◽

pp. 2135-2140 ◽

Cited By ~ 8

Author(s):

FELIX SCHLUMPF

Keyword(s):

Wave Function ◽

Vector Meson ◽

Quark Model ◽

Constituent Quark ◽

Sum Rules ◽

Form Factors ◽

Constituent Quark Model ◽

Specific Form ◽

Vector Meson Dominance ◽

Magnetic Form Factors

We derive the electric and magnetic form factors of the neutron in the framework of a relativistic constituent quark model. Our parameter free prediction agrees well with a recent, accurate measurement. The relativistic features of the model and the specific form of the wave function are essential for the result. Comparisons are made to other models based on vector meson dominance, perturbative QCD and QCD sum rules.

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

Journal of Physics G Nuclear and Particle Physics ◽

10.1088/0954-3899/34/7/015 ◽

2007 ◽

Vol 34 (7) ◽

pp. 1771-1782 ◽

Cited By ~ 4

Author(s):

W L Wang ◽

F Huang ◽

Z Y Zhang ◽

Y W Yu ◽

F Liu

Keyword(s):

Quark Model ◽

Constituent Quark ◽

Constituent Quark Model

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

International Journal of Modern Physics A ◽

10.1142/s0217751x07037056 ◽

2007 ◽

Vol 22 (24) ◽

pp. 4519-4535 ◽

Cited By ~ 11

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.

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