scholarly journals Mechanism of Hadron Mass Splitting in the Quark Model: Possible Clue to the Color Dependence of the Confining Potential

1989 ◽  
Vol 81 (2) ◽  
pp. 418-425
Author(s):  
A. Suzuki ◽  
H. T. Coelho ◽  
Y. Nogami
Keyword(s):  
Quark Model ◽  
Mass Splitting ◽  
Confining Potential ◽  
Hadron Mass

Hadron mass relations in a charmed quark model with broken SU(8) symmetry

1975 ◽  
Vol 12 (9) ◽  
pp. 2756-2760 ◽  
Author(s):  
A. W. Hendry ◽  
D. B. Lichtenberg
Keyword(s):  
Quark Model ◽  
Hadron Mass ◽  
Charmed Quark

scholarly journals MASSES OF LIGHT MESONS IN THE RELATIVISTIC QUARK MODEL

2005 ◽  
Vol 20 (25) ◽  
pp. 1887-1893 ◽  
Author(s):  
D. EBERT ◽  
R. N. FAUSTOV ◽  
V. O. GALKIN
Keyword(s):  
Quark Model ◽  
Ground State ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Relativistic Quark Model ◽  
S Wave ◽  
Confining Potential ◽  
Relativistic Formula ◽  
The Masses ◽  
S Quarks

The masses of the S-wave mesons consisting of the light (u, d, s) quarks are calculated within the constituent quark model. The relativistic Schrödinger-like equation with a confining potential is numerically solved for the complete relativistic [Formula: see text] potential including both spin-independent and spin-dependent terms. The obtained masses of the ground state π, ρ, K, K* and ϕ mesons and their first radial excitations are in a reasonably good overall agreement with experimental data.

scholarly journals MASS SPECTRUM OF THE JP=1/2- AND 3/2- PENTAQUARK ANTIDECUPLETS IN THE PERTURBATIVE CHIRAL QUARK MODEL

2005 ◽  
Vol 14 (07) ◽  
pp. 995-1015 ◽  
Author(s):  
T. INOUE ◽  
V. E. LYUBOVITSKIJ ◽  
TH. GUTSCHE ◽  
AMAND FAESSLER
Keyword(s):  
Mass Spectrum ◽  
Quark Model ◽  
Single Particle ◽  
Ground State ◽  
Bound State ◽  
Wave Functions ◽  
Chiral Quark Model ◽  
Confining Potential ◽  
Full Mass Spectrum ◽  
Basic Configuration

We study the recently discovered Θ+ baryon in the context of the perturbative chiral quark model. The basic configuration of the Θ+ is a pentaquark bound state, where the single particle wave functions are the ground state solutions of a confining potential. We classify the resulting pentaquark multiplets as the JP=1/2- and 3/2- flavor SU (3) antidecuplet. The full mass spectrum of the multiplets is determined by including the meson and gluon cloud contributions, which induce flavor SU (3) breaking. The resulting 3/2- antidecuplet is about 185 MeV heavier than the 1/2- one, mainly because of the semi-perturbative gluon effects. We assign the observed Θ+ baryon as a member of the 1/2- antidecuplet and discuss in particular its relation to the recent experimental signal for a Ξ-- baryon.

IMPROVED STATISTICAL QCD MODEL FOR THE QUARK CONTENT OF THE NUCLEON

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1697-1701 ◽  
Author(s):  
C. MÍREZ ◽  
L. TOMIO ◽  
L. A. TREVISAN ◽  
T. FREDERICO
Keyword(s):  
Quark Model ◽  
Energy Levels ◽  
Structure Functions ◽  
Confining Potential ◽  
Difference Formula ◽  
Quark Content

The neutron-to-proton ratio of the structure functions, [Formula: see text], as well as the corresponding difference [Formula: see text] are obtained within a statistical quark model for the nucleon, where the quark energy levels are given by a central linear confining potential.

QUARK-PION COUPLING CONSTANT IN AN INDEPENDENT-QUARK MODEL WITH CHIRAL SYMMETRY

1993 ◽  
Vol 08 (07) ◽  
pp. 607-617 ◽  
Author(s):  
S.N. JENA ◽  
S. PANDA
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Chiral Symmetry ◽  
Finite Size ◽  
Meson Decay ◽  
Width Ratio ◽  
Coupling Constant ◽  
Confining Potential ◽  
Pion Nucleon ◽  
Good Agreement

Incorporating chiral symmetry into an independent-quark model with the confining potential Vq(r) = ½(1 + γ0)(a2r + V0), the quark-pion coupling constant for quarks in a nucleon are estimated. The values of [Formula: see text] obtained with the approximation of a point pion as well as finite size pion are consistent with that extracted from the experimental vector meson decay width ratio Γ(ρ → π+π0)/Γ(ρ → π- ν) by Suzuki and Bhaduri. The pion-nucleon coupling constant [Formula: see text] comes out to be 14.98 in good agreement with the experimental value.

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