Constituent quark model calculation for a possible JP = 0−, T = 0 dibaryon

  title={Constituent quark model calculation for a possible JP = 0−, T = 0 dibaryon},
  author={G. Wagner and L. Glozman and A. Buchmann and A. Faessler},
  journal={Nuclear Physics},
There exists experimental evidence that a dibaryon resonance d′ with quantum numbers JP = 0−, T = 0 and mass 2065 MeV could be the origin of the narrow peak in the (π+, π−) double charge exchange cross-sections on nuclei. We investigate the six-quark system with these quantum-numbers within the constituent quark model, with linear confinement, effective one-gluon exchange at short range and chiral interactions between quarks (π- and σ-exchange). We classify all possible six quark states with JP… Expand
19 Citations
Pionic decay of a possible d′ dibaryon
Abstract The pionic decay of a possible d′ dibaryon in the process d′ → N + N + π is studied in the microscopic quark shell model and with a single-quark transition operator describing the transitionExpand
The possible strangeness dibaryon states in a chiral quark model
Considering the mixing of scalar mesons, the ΩΩ and Ξ*Ω systems are dynamically investigated within the framework of the chiral SU(3) quark model by solving the resonating group method (RGM)Expand
Possible ΔΔ dibaryons in the quark cluster model
Within the framework of the resonating group method, the binding energy of one-channel ΔΔ(3,0)(d*) and ΔΔ(0,3) are studied in the chiral SU(3) quark cluster model. It is shown that the bindingExpand
Static and dynamic properties of hadronic systems with heavy quarks b and c
This thesis has been devoted to the study of different properties of hadrons with one and two heavy quarks $c$ and/or $b$. All calculations have been done in the framework of a nonrelativisticExpand
Pionic decay of a possible dibaryon d’ and quark models of πB and πd’ couplings
The pionic decay of a possible dibaryon, d’ → πNN, is studied in the model assuming the production of 3P0 quark-antiquark pairs and in other models of effective quark-pion coupling. The vertexExpand
Two-Component Dressed-Bag Model for NN Interaction
A two-component model is developed for the intermediate-range NN interaction based on a new mechanism with an intermediate symmetric six-quark bag "dressed" by σ and other fields. To calculate theExpand
Dibaryon systems in chiral SU(3) quark model
The possible candidates of S-wave dibaryons with various strange numbers are studied under the chiral SU(3) quark model. It is shown that there are three types of baryon-baryon bound states. TheExpand
Dihyperons in chiral color dielectric model
The mass of the dibaryon having spin, parityJπ = 0+, isospinI = 0 and strangeness—2 is computed using chiral color dielectric model. The bare wave function is constructed as a product of twoExpand
Arguments against one-boson-exchange models of nuclear forces and new mechanism for intermediate-and short-range nucleon-nucleon interaction
Arguments against the traditional Yukawa-type approach to NN intermediate-and shortrange interaction due to scalar-isoscalar and heavy-meson exchanges are presented. Instead of the Yukawa mechanismExpand
Dibaryons in nuclear matter
The possibility for the occurrence of a Bose condensate of dibaryons in nuclear matter is investigated within the framework of the Walecka model in the mean-field approximation. The effect of - andExpand


The quark model and the nucleon-nucleon interaction
There exists an almost general agreement that quantum chromodynamics (QCD) is the correct theory of the strong interaction. Thus, one should at least in principle be able to calculate the propertiesExpand
Nucleon-nucleon interaction as derived from the De Rujula, Georgi, Glashow phenomenological quark-quark potential
The nucleon-nucleon interaction, originating from the phenomenological quark-quark interaction: one gluon exchange with an ad hoc confining potential, is rigorously derived. The coupling constants ofExpand
The potential model of colored quarks: Success for single-hadron states, failure for hadron-hadron interactions
Abstract The success of the additive potential model of colored quarks for the masses, decay rates, and other properties of single mesons and baryons does not imply that this model can yield theExpand
A new mechanism of spontaneous chiral symmetry breaking in the instanton vacuum of QCD is proposed. It is based on the delocalization of zero fermionic modes in the pseudoparticles' medium. ThisExpand
Hadron Masses in a Gauge Theory
We explore the implications for hadron spectroscopy of the "standard" gauge model of weak, electromagnetic, and strong interactions. The model involves four types of fractionally charged quarks, eachExpand
The Nambu and Jona-Lasinio model: Its implications for Hadrons and Nuclei☆
Abstract We review recent developments and applications of the Nambu and Jona-Lasinio model with three quark flavours, based on the SU(3)L ⊗ SU(3)R ⊗ U(1)V symmetry of QCD. The model describesExpand
The Quark Model and the Nature of the Repulsive Core of the Nucleon Nucleon Interaction
Abstract The nature of the repulsive core of the nucleon-nucleon interaction is studied in the quark model. The resonating group equation for nucleon-nucleon scattering is solved with the colourExpand
Negative-Parity NN Resonances and Extraneous States
Angular momentum excitations of six quarks in a bag give a rich resonance structure in the NN channel above P/sub lab/ approx. = 1.3 GeV/c. Some states occur with quantum numbers foreign to NN, whichExpand
Influence of six-quark bags on the NN interaction in a resonating group scattering calculation
Abstract The influence of six-quark bags on the nucleon-nucleon (NN) interaction is studied in a dynamical calculation of the NN scattering process. The NN interaction is described by the exchange ofExpand
On the fractional-parentage expansions of color-singlet six-quark states in a cluster model
Abstract The classification is given of observable (color-singlet) antisymmetric six-quark states in a cluster model with definite orbital and isospin-spin symmetries (“symmetry basis”). A number ofExpand