scholarly journals $\Sigma_c {\bar D}$ AND $\Lambda_c {\bar D}$ STATES IN A CHIRAL QUARK MODEL

2014 ◽  
Vol 26 ◽  
pp. 1460071
Author(s):  
W. L. WANG ◽  
F. HUANG ◽  
Z. Y. ZHANG ◽  
B. S. ZOU
Keyword(s):  
Binding Energy ◽  
Quark Model ◽  
Recent Work ◽  
Bound State ◽  
Repulsive Interaction ◽  
Chiral Quark Model ◽  
Text Interaction

We report our recent work on a dynamical investigation of the [Formula: see text] and [Formula: see text] states in a chiral quark model. Our results show that the [Formula: see text] interaction is attractive, which consequently results in a [Formula: see text] bound state with the binding energy of about 5-42 MeV, unlike the case of [Formula: see text] state, which has a repulsive interaction and thus is unbound.

THE STUDY OF DIBARYON SYSTEMS WITH STRANGENESS ON CHIRAL QUARK MODEL

2005 ◽  
Vol 20 (01) ◽  
pp. 69-77
Author(s):  
HOURONG PANG ◽  
JIALUN PING ◽  
XIAOHUA WU
Keyword(s):  
Binding Energy ◽  
Quark Model ◽  
Root Mean Square ◽  
Bound State ◽  
Group Method ◽  
Chiral Quark Model ◽  
Mean Square ◽  
Narrow Resonance ◽  
The Masses

We expand Salamanca SU (2) chiral quark model to SU (3) one and calculate promising dibaryon candidates with strangeness S=-3,-6 in the framework of resonating group method. We find that, besides ΩΩ, the mass of NΩ state is about 23–38 MeV lower than its threshold, it might appear as a bound state or a narrow resonance. The effect of K and η exchanges on the masses of strangeness and nonstrangeness systems has been studied and found to be negligible for nonstrangeness systems. However this effect brings some changes (about tens of MeV) on the masses of strangeness systems. We have also studied the sensitivities of binding energy and root mean square radius to the mass of s-quark.

scholarly journals THE POSSIBLE DI-OMEGA DIBARYON IN QUARK CLUSTER MODEL

2014 ◽  
Vol 26 ◽  
pp. 1460120 ◽  
Author(s):  
L. R. DAI ◽  
J. LIU ◽  
L. YUAN
Keyword(s):  
Binding Energy ◽  
Quark Model ◽  
Cluster Model ◽  
Bound State ◽  
Nucleon Nucleon ◽  
Scattering Data ◽  
Nucleon Scattering ◽  
Scalar Mesons ◽  
Ideal Mixing ◽  
The Ideal

The mixing of scalar mesons is introduced into the baryon-baryon system in the chiral SU(3) quark model to further dynamically investigate the Di-omega state by using the same parameters as those in reasonably describing the experimental hyperon-nucleon and nucleon-nucleon scattering data. Two different mixings of scalar mesons, the ideal mixing and 19° mixing, are discussed, and compared with no mixing. The results show that it is still deeply bound state if 19° mixing is adopted, the same as those of no mixing. However, for ideal mixing, the binding energy is reduced quite a lot, yet it is still a bound state.

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.

scholarly journals POSSIBLE $D\bar{D}$ AND $B\bar{B}$ MOLECULAR STATES IN A CHIRAL QUARK MODEL

2012 ◽  
Vol 27 (27) ◽  
pp. 1250161 ◽  
Author(s):  
M. T. LI ◽  
W. L. WANG ◽  
Y. B. DONG ◽  
Z. Y. ZHANG
Keyword(s):  
Quark Model ◽  
Systematic Study ◽  
Bound States ◽  
Effective Interaction ◽  
Bound State ◽  
Chiral Quark Model ◽  
State Problem ◽  
Bound State Problem

We perform a systematic study of the bound state problem of [Formula: see text] and [Formula: see text] systems by using effective interaction in our chiral quark model. Our results show that both the interactions of [Formula: see text] and [Formula: see text] states are attractive, which consequently result in [Formula: see text] and [Formula: see text] bound states.

scholarly journals Full-heavy tetraquarks in constituent quark models

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Xin Jin ◽  
Yaoyao Xue ◽  
Hongxia Huang ◽  
Jialun Ping
Keyword(s):  
Quark Model ◽  
Constituent Quark ◽  
Resonance State ◽  
Bound State ◽  
Chiral Quark Model ◽  
Present Calculation ◽  
Resonance States ◽  
Screening Model ◽  
Quantum Numbers ◽  
Quark Models

AbstractThe full-heavy tetraquarks $$bb{\bar{b}}{\bar{b}}$$ b b b ¯ b ¯ and $$cc{\bar{c}}{\bar{c}}$$ c c c ¯ c ¯ are systematically investigated within the chiral quark model and the quark delocalization color screening model. Two structures, meson–meson and diquark–antidiquark, are considered. For the full-beauty $$bb{\bar{b}}{\bar{b}}$$ b b b ¯ b ¯ systems, there is no any bound state or resonance state in two structures in the chiral quark model, while the wide resonances with masses around $$19.1-19.4$$ 19.1 - 19.4 GeV and the quantum numbers $$J^{P}=0^{+}$$ J P = 0 + , $$1^{+}$$ 1 + , and $$2^{+}$$ 2 + are possible in the quark delocalization color screening model. For the full-charm $$cc{\bar{c}}{\bar{c}}$$ c c c ¯ c ¯ systems, the results are qualitative consistent in two quark models. No bound state can be found in the meson–meson configuration, while in the diquark–antidiquark configuration there may exist the resonance states, with masses range between 6.2 to 7.4 GeV, and the quantum numbers $$J^{P}=0^{+}$$ J P = 0 + , $$1^{+}$$ 1 + , and $$2^{+}$$ 2 + . And the separation between the diquark and the antidiquark indicates that these states may be the compact resonance states. The reported state X(6900) is possible to be explained as a compact resonance state with $$IJ^{P}=00^{+}$$ I J P = 00 + in present calculation. All these full-charm resonance states are worth searching in the experiments further.

scholarly journals PION PROPERTIES AT FINITE DENSITY

2009 ◽  
Vol 24 (11n13) ◽  
pp. 891-894
Author(s):  
SEUNG-IL NAM ◽  
HYUN-CHUL KIM
Keyword(s):  
Quark Model ◽  
Recent Work ◽  
Decay Constant ◽  
Chemical Potential ◽  
Lorentz Invariance ◽  
Pion Mass ◽  
Weak Decay ◽  
Chiral Quark Model ◽  
Time And Space ◽  
Finite Density

In this talk, we report our recent work on the pion weak decay constant (Fπ) and pion mass (mπ) using the nonlocal chiral quark model with the finite quark-number chemical potential (μ) taken into account. Considering the breakdown of Lorentz invariance at finite density, the time and space components are computed separately, and the corresponding results turn out to be: [Formula: see text] and [Formula: see text] at μc ≈ 320 MeV , respectively. Using the in-medium Gell-Mann-Oakes-Renner (GOR) relation, we show that the pion mass increases by about 15% at μc.

Four-body bound state calculations using three-dimensional low-momentum effective interaction Vlow-k

2017 ◽  
Vol 26 (12) ◽  
pp. 1750083 ◽  
Author(s):  
M. Radin ◽  
H. Mohseni ◽  
F. Nazari ◽  
M. R. Hadizadeh
Keyword(s):  
Wave Function ◽  
Renormalization Group ◽  
Binding Energy ◽  
Effective Interaction ◽  
Three Dimensional ◽  
Bound State ◽  
Suzuki Method ◽  
Wide Range ◽  
Cutoff Dependence ◽  
Text Interaction

In this paper, we solve the coupled Yakubovsky integral equations for four-body (4B) bound state using the low-momentum effective two-body interaction [Formula: see text] in a three-dimensional (3D) approach, without using a partial wave (PW) decomposition. The renormalization group (RG) evolved interaction is constructed from spin-independent Malfliet–Tjon potential using the Lee–Suzuki method. The cutoff dependence of the 4B binding energy and wave function is investigated for a wide range of the momentum cutoff [Formula: see text] of [Formula: see text] interaction from 1.0 to 8.0[Formula: see text][Formula: see text].

VARIATIONAL CALCULATION OF K-pp WITH CHIRAL SU(3)-BASED $\bar KN$ INTERACTION

2010 ◽  
Vol 19 (12) ◽  
pp. 2618-2623 ◽  
Author(s):  
A. Doté ◽  
T. Hyodo ◽  
W. Weise
Keyword(s):  
Binding Energy ◽  
Decay Width ◽  
Bound State ◽  
Variational Calculation ◽  
State Solution ◽  
P Wave ◽  
Bound State Solution ◽  
Mesonic Decay ◽  
Nuclear Cluster ◽  
Text Interaction

The prototype of a [Formula: see text] nuclear cluster, K-pp, has been investigated using effective [Formula: see text] potentials based on chiral SU (3) dynamics. Variational calculation shows a bound state solution with shallow binding energy B(K-pp) = 20 ± 3 MeV and broad mesonic decay width [Formula: see text]. The [Formula: see text] pair in the K-pp system exhibits a similar structure as the Λ(1405). We have also estimated the dispersive correction, p-wave [Formula: see text] interaction, and two-nucleon absorption width.

Sign in / Sign up

Export Citation Format

Share Document