Erratum: The<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="italic">qqqq</mml:mi><mml:mover accent="true"><mml:mrow><mml:mi>q</mml:mi></mml:mrow><mml:mrow><mml:mrow /><mml:mo>¯</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:math>components and hidden flavor contributions to the baryon magnetic moments [Phys. Rev. C<b>74</b>, 055205 (2006)]

An, Chun-Sheng; Li, Q. B.; Riska, D. O.; Zou, B. S.

doi:10.1103/physrevc.75.069901

Cited by 25 publications

(53 citation statements)

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“…Then, our results for the ∆ form factors E0 and M1, given by Eqs. (27), and the magnetic moment µ ∆ , in particular, are true predictions. is a result of a dipole fit from the same references and corresponds to r E0 = 0.691 fm.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…For the electrical quadrupole (E2) there are calculations by Buchmann based on several models [24]. For the magnetic moments there is also a variety of predictions based on several frameworks, such as the SU(6) quark model [22], relativistic quark models [25], quark models with two-body exchange currents [26] and sea quark contributions [27], QCD sum rules [28,29], Chiral and Soliton models [30,31,32,33], field theoretical formulations with hadron degrees of freedom [34] and quark degrees of freedom [35], and extrapolations of lattice QCD [13,36,37,38,39]. We present a summary of these results in one of the following sections (Table I).…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic form factors of the Δ in an S-wave approach

Ramalho

Peña

2009

J. Phys. G: Nucl. Part. Phys.

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Without any further adjusting of parameters, a relativistic constituent quark model, successful in the description of the data for the nucleon elastic form factors and of the dominant contribution for the nucleon to ∆ electromagnetic transition, is used here to predict the dominant electromagnetic form factors of the ∆ baryon. The model is based on a simple ∆ wave function corresponding to a quark-diquark system in an S-state. The results for E0 and M1 are consistent both with experimental results and lattice calculations. The remaining form factors E2 and M3 vanish, given the symmetric structure taken for the ∆.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electromagnetic form factors of the Δ in an S-wave approach

Ramalho

Peña

2009

J. Phys. G: Nucl. Part. Phys.

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“…The combination of the two results leads to µ Ω − = (−2.019 ± 0.054)µ N [1,14]. Several works followed with estimations of µ Ω − [15,16,17,18,19,20,21,22,23,24,25,26,27,28,29]. The Ω − electric quadrupole moment was also predicted [22,23,30,31,32,33,34,35,36,37,38,39,40], although there is no experimental result.…”

Section: ωmentioning

confidence: 99%

Relativistic quark model for theΩ−electromagnetic form factors

2009

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“…Note that in the SU(3) symmetric case, the ratio of probabilities for five-quark components with strange and light quark-antiquark pairs is 1/2 [16], while by taking into account the SU(3) symmetry breaking effects, we determined [39] that ratio to be P ss /(P uū + P dd ) = 0.057/(0.098 + 0.216) ∼ 0.18 and putting P ss ∼ 6%.…”

Section: Introductionmentioning

confidence: 99%

Strangeness magnetic form factor of the proton in the extended chiral quark model

Saghai

2013

Phys. Rev. C

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Background: Unravelling the role played by nonvalence flavors in baryons is crucial in deepening our comprehension of QCD. The strange quark, a component of the higher Fock states in baryons, is an appropriate tool to study nonperturbative mechanisms due to the pure sea quark.Purpose: Study the magnitude and the sign of the strangeness magnetic moment µ s and the magnetic form factor (G s M ) of the proton. Methods:Within an extended chiral constituent quark model, we investigate contributions from all possible five-quark components to µ s and G s M (Q 2 ) in the four-vector momentum range Q 2 ≤ 1 (GeV/c) 2 . The probability of the strangeness component in the proton wave function is calculated employing the 3 P 0 model. Results:Predictions are obtained by using input parameters taken from the literature. The observables µ s and G s M (Q 2 ) are found to be small and negative, consistent with the lattice-QCD findings as well as with the latest data released by the PVA4 and HAPPEX Collaborations.Conclusions: Due to sizeable cancelations among different configurations contributing to the strangeness magnetic moment of the proton, it is indispensable to i) take into account all relevant five-quark components and include both diagonal and non-diagonal terms, ii) handle with care the oscillator harmonic parameter ω 5 and the ss component probability.

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Erratum: Theqqqqq¯components and hidden flavor contributions to the baryon magnetic moments [Phys. Rev. C74, 055205 (2006)]

Abstract: Erratum: The qqqqq components and hidden flavor contributions to the baryon magnetic moments [Phys. Rev. C 74, 055205 (2006)]

Cited by 25 publications

References 1 publication

Electromagnetic form factors of the Δ in an S-wave approach

Electromagnetic form factors of the Δ in an S-wave approach

Relativistic quark model for theΩ−electromagnetic form factors

Strangeness magnetic form factor of the proton in the extended chiral quark model

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