Properties of Hadrons in the Quark Model

Hendry, A.W.; Lichtenberg, D. B.

doi:10.1002/prop.2190330302

Cited by 17 publications

(4 citation statements)

References 245 publications

(110 reference statements)

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“…Such a margin should a fortiori be valid for the quadriquark inequalities. 33 Thus we expect that the ccūū state actually lies well above the D * D threshold and therefore is unstable. The situation is very different for ccū d. In this case we could choose u d to be in the spin singlet state.…”

Section: Appendix D: Enumeration and Specification Of The Baryon-meso...mentioning

confidence: 99%

“…The simple "quark counting rules" relating meson and baryon total cross-sections [29,30] and masses [31] were early indications for the relevance of the quark model [32,33]. If the mass of a ground state hadron is just the sum of the masses of its quark constituents, then 2m…”

Section: Baryon-meson Mass Inequalities In the Gluon Exchange Modelmentioning

confidence: 99%

“…The identical uu or cc quarks are in the lowest L = 0 state, and hence the uū or cc in the corresponding meson should be in the triplet state 33. Here we have for some of the Qq mesons worse trial wave functionals as compared with those extracted from baryons, namely mesonic strings consisting of three segments going through the two junction points.…”

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confidence: 99%

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QCD inequalities

Nussinov

Lampert

2002

Physics Reports

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Section: Appendix D: Enumeration and Specification Of The Baryon-meso...mentioning

confidence: 99%

Section: Baryon-meson Mass Inequalities In the Gluon Exchange Modelmentioning

confidence: 99%

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QCD inequalities

Nussinov

Lampert

2002

Physics Reports

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“…It thus is not a pure (qO) sS1 model, and we use quotes for that reason action [7] require two parts: (1) a short distance one gluon exchange force and (2) a long distance scalar confining force. Indeed the combination of the one gluon exchange and a linear confining force reproduces the spectra of heavy quarkonia systems such as c g, b b, and those of one light and one heavy quark such as D ~ D ~ [8]. For light quark (u, d, s) systems the confining forces are often taken to be harmonic (~ r 2) in potential models [7].…”

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confidence: 99%

A new model forN $$\bar N$$ annihilation

Alberg

Henley

Wilets

1988

Z. Physik A - Atomic Nuclei

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A new quark model for Nb7 annihilation is proposed. It is argued that a linear superposition of the so-called SP 0 and SS t models is more consistent with QCD and the inclusion of quark degrees of freedom in NN scattering, and is also suggested by the data. A comparison is made, in Born approximation, with the angular distribution for p~AA. PACS" 25.10+ 5; 12.40.Qq Applications of QCD to low energy hadronic interactions require numerical calculations on a lattice or models. Among the latter are bag models, topological and nontopological soliton models, and flux-tube type models. It has been shown that the so-called SP o model [1,2] in which a quark(q)-antiquark(~) pair are created from, or annihilated into, the vacuum is related to QCD and flux-tube approximations thereto [3]. In recent years an effective perturbative approach [4] or "3S1" model [5,2] 1 has also been shown to be effective in describing reactions in which a q ~ pair is annihilated or created. Reactions in which these models have been applied include nucleon-antinucleon (NbT) annihilation [2].A number of recent letters and papers argue that one model (e.g. 3P0) is superior to the other (e.g. "3S 1 ") [6]. We wish to argue in this short article that such comparisons should not be made, but rather, that these two models emphasize different aspects of QCD. Furthermore a description consistent with NN scattering models also leads to a superposition of the 3P 0 and "sst" models as components of an overall scheme. We show that this is also suggested by the data.Almost all models which incorporate quark-gluon degrees of freedom in the description of the NN inter-1 The name sS 1 is a misnomer because the virtual gluon exchanged between quarks/antiquarks has both transverse (je = 1 -) and longitudinal (JP=0 +) or Coulomb components. It thus is not a pure (qO) sS1 model, and we use quotes for that reason action [7] require two parts: (1) a short distance one gluon exchange force and (2) a long distance scalar confining force. Indeed the combination of the one gluon exchange and a linear confining force reproduces the spectra of heavy quarkonia systems such as c g, b b, and those of one light and one heavy quark such as D ~ D ~ [8]. For light quark (u, d, s) systems the confining forces are often taken to be harmonic (~ r 2) in potential models [7]. If we begin with a field theory and use crossing symmetry, then consistency requires that similar forces should be present in the NN system, i.e. a short range one gluon exchange and a long range scalar interaction.The important features which appear to be present in both nuclear and quark systems is that they are dominated by scalar (or pseudoscalar) and vector interactions. In the NN system these are described, at large distances, by ~, a, p, and co exchanges. In q q and q c~ systems they arise from gluon exchange and the confining force. There is good evidence [9] that the confining force is a scalar one which is independent of flavor, whereas the one gluon force is clearly a colored-vector exchange one.In ...

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Heavy Meson Spectroscopy

Chakrabarty

1991

Fortschr. Phys.

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I n this article we give a review of certain aspects of the present understanding of spectroscopy of heavy mesons and constituent quark masses in the light of non-relativistic potential model approach motivated by quantum chromodynamics. We find that the one gluon exchange a t short distance and colour-confining interaction a t large distance which is pure scalar (or scalarvector admixture with dominant scalar interaction) under the Lorente transformation, can explain only partially the present data on 1P states of cE and bb states. The S-wave data, that are available a t present, however can be understood with both scalar confinement or scalar-vector admixture with scalar-dominant interaction.

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Properties of Hadrons in the Quark Model

Cited by 17 publications

References 245 publications

QCD inequalities

QCD inequalities

A new model forN $$\bar N$$ annihilation

Heavy Meson Spectroscopy

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