Tetraquarks: relativistic corrections and other issues

@article{Richard2021TetraquarksRC,
  title={Tetraquarks: relativistic corrections and other issues},
  author={Jean Marc Richard and Alfredo Valcarce and Javier Vijande},
  journal={Suplemento de la Revista Mexicana de F{\'i}sica},
  year={2021}
}
We discuss the effect of relativistic kinematics on the binding energy of multiquark states. For a given potential, the use of relativistic kinematics lowers the energy by a larger amount for the threshold made of two mesons than for a tetraquark, so that its binding is weakened. Some other issues associated with exotic hadrons are also briefly discussed. 

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References

SHOWING 1-10 OF 36 REFERENCES

Effect of relativistic kinematics on the stability of multiquarks

We discuss whether the bound nature of multiquark states in quark models could benefit from relativistic effects on the kinetic energy operator. For mesons and baryons, relativistic corrections to

Few-body quark dynamics for doubly-heavy baryons and tetraquarks

We discuss the adequate treatment of the 3- and 4-body dynamics for the quark model picture of double-charm baryons and tetraquarks. We stress that the variational and Born-Oppenheimer approximations

Do narrow heavy multiquark states exist

We discuss the existence of states made of four heavy quarks in the context of potential models already used in the study of heavy mesons and baryons. We first consider the situation where the quarks

Strength of pion exchange in hadronic molecules

Exotic Hadrons: Review and Perspectives

The physics of exotic hadrons is revisited and reviewed, with emphasis on flavour configurations which have not yet been investigated. The constituent quark model of multiquark states is discussed in

Doubly heavy tetraquark resonances in lattice QCD

We study tetraquark resonances with lattice QCD potentials computed for two static quarks and two dynamical quarks, the Born-Oppenheimer approximation and the emergent wave method of scattering

Study of the doubly charmed tetraquark [Formula: see text].

Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and

Stable double-heavy tetraquarks: spectrum and structure

Bound states of double-heavy tetraquarks are studied in a constituent quark model. Two bound states are found for isospin and spin-parity I(J^P ) = 0(1^+) in the bb\bar{u}\bar{d} channel. One is