scholarly journals d∗(2380) Resonance in a Chiral SU(3) Constituent Quark Model

2018 ◽  
Vol 46 ◽  
pp. 1860034
Author(s):  
Yubing Dong ◽  
Pengnian Shen ◽  
Fei Huang ◽  
Zongye Zhang
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Charge Distribution ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Total Width ◽  
Compact Structure ◽  
Decay Modes ◽  
Decay Widths

Recent studies on the newly observed resonance [Formula: see text] with a compact structure in a chiral SU(3) constituent quark model are briefly reported. the overall properties, including the mass, the partial decay widths in various decay modes, and the total width, comparing with the experimental data, show that a compact hexaquark dominated structure might be a reasonable interpretation for this state. Moreover, the charge distribution of [Formula: see text] is also discussed.

The Λ(1520) photoproduction from proton

2014 ◽  
Vol 29 ◽  
pp. 1460235 ◽  
Author(s):  
Jun He
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Lagrangian Method ◽  
Nucleon Resonance ◽  
Proton Target ◽  
Nucleon Resonances ◽  
Effective Lagrangian

The Λ(1520) photoproduction from proton target is investigated within the effective Lagrangian method and well compared with the experimental data. The D13 state N(2120) plays the most important role among the nucleon resonances. Besides N(2120), a nucleon resonance [Formula: see text] predicted by the constituent quark model is found also important to reproduce the experimental data. Other nucleon resonances give negligible contributions in the channel considered in this work.

scholarly journals Understanding d*(2380) in a chiral quark model

2019 ◽  
Vol 199 ◽  
pp. 02017
Author(s):  
F. Huang ◽  
Y. B. Dong ◽  
P. N. Shen ◽  
Z. Y. Zhang
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Chiral Quark Model ◽  
Exotic State ◽  
Decay Properties ◽  
Decay Widths ◽  
Color Components ◽  
Good Agreement ◽  
Made In

We review our recent progresses made in the study of the structure and decay properties of the newly observed d*(2380) within a chiral constituent quark model. It is found that the d*(2380) can be explained as a compact hexaquark-dominated exotic state with a fraction of hidden color components of about 2/3 in its configuration. Based on this scenario the single- and double- pionic partial decay widths are calculated and the corresponding numerical results are in good agreement with the experimental data.

HEAVY FLAVOUR HADRONIC MOLECULES

2011 ◽  
Vol 26 (03n04) ◽  
pp. 613-615
Author(s):  
P. G. ORTEGA ◽  
D. R. ENTEM ◽  
F. FERNÁNDEZ
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Bound State ◽  
Constituent Quark Model ◽  
Charmonium State ◽  
Decay Modes

The structure and different decay modes of the X(3872) resonance are described in a constituent quark model as dynamically generated by the coupling of a molecular DD* state with a [Formula: see text] state. We also obtain in the D*D* JPC = 1-- channel a bound state that can be identify with the Y(4008) charmonium state. Other possible molecular states in the hidden bottom sector are discussed.

scholarly journals RELATIVISTIC DESCRIPTION OF THE CHARMONIUM MASS SPECTRUM

2005 ◽  
Vol 20 (12) ◽  
pp. 875-880 ◽  
Author(s):  
D. EBERT ◽  
R. N. FAUSTOV ◽  
V. O. GALKIN
Keyword(s):  
Experimental Data ◽  
Mass Spectrum ◽  
Quark Model ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Relativistic Treatment ◽  
Relativistic Description ◽  
Good Agreement

The charmonium mass spectrum is considered in the framework of the constituent quark model with the relativistic treatment of the c quark. The obtained masses are in good agreement with the existing experimental data including the mass of ηc(2S).

Study of d∗(2380) resonance in a chiral constituent quark model

2018 ◽  
Vol 33 (33) ◽  
pp. 1830031 ◽  
Author(s):  
Yubing Dong ◽  
Pengnian Shen ◽  
Fei Huang ◽  
Zongye Zhang
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Form Factors ◽  
Experimental Tests ◽  
Constituent Quark Model ◽  
Group Method ◽  
Compact Structure ◽  
Dibaryon Resonance ◽  
Double Pion ◽  
Dominant Structure

Studies on newly observed dibaryon resonance [Formula: see text] ([Formula: see text]) with a compact structure in recent years are reviewed. In terms of a dynamical calculation with a chiral constituent quark model by using Resonating Group Method, the general characteristics of this resonance, like its mass, binding energy, root-mean-square radius, as well as, its strong double pion decays of [Formula: see text] and [Formula: see text], its strong single pion decays of [Formula: see text], and its electromagnetic form factors, are given and compared with the experimental data. It is shown that the compact hexaquark dominant structure might be a reasonable interpretation for this dibaryon resonance and the charge distribution might be a new observable to judge different theoretical assumptions for its structure. Moreover, possible experimental tests are also discussed briefly.

An independent quark model study of weak leptonic decays of pseudoscalar mesons

2015 ◽  
Vol 30 (16) ◽  
pp. 1550092
Author(s):  
S. N. Jena ◽  
P. K. Nanda ◽  
S. Sahoo ◽  
S. Panda
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Decay Constant ◽  
Model Parameters ◽  
Decay Modes ◽  
Leptonic Decays ◽  
Model Study ◽  
Pseudoscalar Mesons ◽  
Model Predictions ◽  
Decay Widths

An independent quark model with a relativistic power-law potential is used to study the weak leptonic decays of light and heavy pseudoscalar mesons. The partial decay width and the decay constant for the weak leptonic decay are derived from the quark–antiquark momentum distribution amplitude which is obtained from the bound quark eigenfunction with the assumption of a strong correlation existing between quark–antiquark momenta inside the decaying meson in its rest frame. The model parameters are first determined from the application of the model to study the ground state hyperfine splitting of ρ, K, D, Ds, B, Bs and Bc mesons. The same model with no adjustable parameters is then used to evaluate the decay constants fM and the decay widths of pseudoscalar mesons. The model predictions agree quite well with the available experimental data as well as with those of several other models. The decay constant for pion and kaon are obtained as fπ = 132 MeV and fk = 161 MeV which closely agree with experimental values. But in case of heavier mesons for which experimental data are not yet available, the present model gives its predictions as fBC > fBS > fB, fDS > fD, fD > fB and fπ > fB which are in conformity with most of other model predictions. The model predictions of the corresponding decay widths and the branching ratios for the [Formula: see text] and [Formula: see text] decay modes are in close agreement with the available experimental data.

Constituent quark model study of exotic meson states

2014 ◽  
Vol 29 ◽  
pp. 1460227 ◽  
Author(s):  
Youchang Yang ◽  
Jialun Ping ◽  
Chengrong Deng ◽  
Meng Wan
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Constituent Quark ◽  
Expansion Method ◽  
Constituent Quark Model ◽  
Babar Collaboration ◽  
Exotic Meson ◽  
Exotic States ◽  
Model Study ◽  
Meson States

Using high precision numerical method based on Gaussian expansion method for few-body systems, we studied the spectra of possible exotic meson states composed of [Formula: see text] (Q = c, b, and q = u, d, s) in non-relativistic constituent quark model. Some newly released experimental data by the BES, Belle, BaBar Collaboration can be interpreted in our calculation. Several possible exotic states are also predicted.

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
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