The masses of the nonstrange baryon resonances in quark model with spin-spin and tensor interactions

1980 ◽  
Vol 3 (4) ◽  
pp. 321-328 ◽  
Author(s):  
M. B�hm
Keyword(s):  
Quark Model ◽  
The Masses ◽  
Baryon Resonances

scholarly journals STRUCTURE OF LIGHT AND HEAVY PENTAQUARKS

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1797-1802 ◽  
Author(s):  
FL. STANCU
Keyword(s):  
Variational Method ◽  
Hyperfine Interaction ◽  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Positive Parity ◽  
Model Based ◽  
Quantum Numbers ◽  
The Masses

Light and heavy pentaquarks are described within a constituent quark model based on a spin-flavor hyperfine interaction. In this model the lowest state acquires positive parity. The masses of the light antidecuplet members are calculated dynamically using a variational method. It is shown that the octet and antidecuplet states with the same quantum numbers mix ideally due to SU (3)F breaking. Masses of the charmed antisextet pentaquarks are predicted within the same model.

THE CHIRAL QUARK MODEL AND BARYON PHENOMENOLOGY

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1785-1790 ◽  
Author(s):  
D. O. RISKA
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Axial Current ◽  
Chiral Quark Model ◽  
Pion Decay ◽  
Decay Widths ◽  
Nucleon Form Factors ◽  
Baryon Spectra ◽  
Baryon Resonances ◽  
Covariant Quark Model

The chiral quark model posits that pions couple to the axial current of constituent quarks. This chiral pion coupling governs the pion decays of baryon resonances and also implies pion and multipion interactions between the quarks. The qualitative features of this model for the description of pionic decay widths and baryon spectra are outlined. When the covariant quark model wave function for the nucleon is chosen so as to describe the empirical nucleon form factors the pion decay widths of the positive parity resonances are underpredicted. This indicates the presence of significant multiquark components in these resonances.

Baryon Resonances in a Constituent Quark Model

2000 ◽  
Vol 137 ◽  
pp. 169-188 ◽  
Author(s):  
Masaki Arima ◽  
Keiichi Masutani ◽  
Toru Sato
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Baryon Resonances

scholarly journals Decays of Baryon Resonances. I: Equivalence of an l-broken SU(6)W Model to a Quark Model

1978 ◽  
Vol 59 (1) ◽  
pp. 291-293 ◽  
Author(s):  
S. Ishida ◽  
M. Oda ◽  
J. Otokozawa
Keyword(s):  
Quark Model ◽  
Baryon Resonances

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.

Higher Meson and Baryon Resonances in aSU(18)Quark Model

1966 ◽  
Vol 145 (4) ◽  
pp. 1269-1272 ◽  
Author(s):  
Asher Peres
Keyword(s):  
Quark Model ◽  
Baryon Resonances

scholarly journals RELATIVISTIC QUARK MODEL AND PENTAQUARK SPECTROSCOPY

2003 ◽  
Vol 12 (06) ◽  
pp. 793-807 ◽  
Author(s):  
S. M. GERASYUTA ◽  
V. I. KOCHKIN
Keyword(s):  
Dispersion Relation ◽  
Quark Model ◽  
Mass Spectra ◽  
Relativistic Quark Model ◽  
The Masses ◽  
Meson States

Relativistic five-quark equations are found in the framework of the dispersion relation technique. The solutions of these equations using the method based on the extraction of the leading singularities of the amplitudes are obtained. The five-quark amplitudes for the low-lying pentaquarks are calculated under the condition that flavor SU(3) symmetry holds. The poles of the five-quark amplitudes determine the masses of the lowest pentaquarks. The mass spectra of pentaquarks which contain only light quarks are calculated. The calculation of pentaquark amplitudes estimates the contributions of three subamplitudes: molecular subamplitude BM, Mqqq subamplitude and [Formula: see text] subamplitude. The main contributions to the pentaquark amplitude are determined by the subamplitudes, which include the meson states M.

scholarly journals The Masses of Heavy Pentaquarks in Non-Relativistic Bethe-Salpeter Quark Model

2021 ◽  
Vol 68 (1 Jan-Feb) ◽  
Author(s):  
M. Abu-shady ◽  
N. H. Gerish ◽  
M. M. A. Ahmed
Keyword(s):  
Quark Model ◽  
Good Description ◽  
Spin Interaction ◽  
Linear Potential ◽  
Exotic Particles ◽  
Quark Interaction ◽  
The Masses ◽  
Two Bodies

The exotic particles such as the pentaquarks are to strengthen understanding of important interactions and the principle of QCD in which pentaquarks contain two heavy- valence quarks. The structure of two bodies including an antiquark and two-diquark is introduced. A new potential for quark interaction is suggested which includes the logarithm potential, the linear potential, and the spin-spin interaction. The suggested potential is included in the framework of spinless of Bethe-Salpeter equation. A comparison with other works is presented which provides a good description of pentaquarks.

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