Structure of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Nucleus from Elastic Electron Scattering

Frosch, R.; McCarthy, J. S.; Rand, R.E.; Yearian, M. R.

doi:10.1103/physrev.160.874

Cited by 438 publications

(145 citation statements)

References 10 publications

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“…The second multipliers are the experimental form factors of an α-particle F ch, 4 He (q) [18] or proton F ch,p (q) [19]. If a form factor becomes zero at a definite transferred momentum squared, the absolute value of the form factor has a "dip" at this q 2 .…”

Section: Density Distributions and Form Factorsmentioning

confidence: 99%

Structure of 14C and 14O Nuclei Calculated in the Variational Approach

Grinyuk

Piatnytskyi

2016

Ukr. J. Phys.

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The structure of mirror 14 C and 14 O nuclei has been studied in the framework of the fiveparticle model (three α-particles and two nucleons). Interaction potentials are proposed, which allowed the energy and radius of 14 C nucleus, as well as the energy of 14 O one, to agree with experimental data. On the basis of the variational approach with the use of Gaussian bases, the energies and wave functions for five-particle systems under consideration are calculated. The charge radius of 14 O nucleus, as well as the charge density distributions and the form factors for both nuclei, are predicted. K e y w o r d s: root-mean-square radius, density distribution, charge form factor, 14 C nucleus, 14 O nucleus.

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Section: Density Distributions and Form Factorsmentioning

confidence: 99%

Structure of 14C and 14O Nuclei Calculated in the Variational Approach

Grinyuk

Piatnytskyi

2016

Ukr. J. Phys.

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“…where w=.445, ∆ = .327 f m. If c=1.01 fm it is a good fit to experimental density distribution in He 4 [15]. In the potential we simply changed it to c = 1.01f m + 1/m π , with variable pion mass.…”

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confidence: 99%

Limits on cosmological variation of strong interaction and quark masses from big bang nucleosynthesis, cosmic, laboratory and Oklo data

2002

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Recent data on cosmological variation of the electromagnetic fine structure constant from distant quasar (QSO) absorption spectra have inspired a more general discussion of possible variation of other constants. We discuss variation of strong scale and quark masses. We derive the limits on their relative change from (i) primordial Big-Bang Nucleosynthesis (BBN); (ii) Oklo natural nuclear reactor, (iii) quasar absorption spectra, and (iv) laboratory measurements of hyperfine intervals.

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“…The nonrelativistic charge form factors which are calculated from fixed empirical values of nucleon [11] have the same qualitative features as the empirical form factor values taken from Refs [23,24], with two nodes. The best agreement with experimental data is found for the fundamental representation j = 1 2 .…”

Section: Numerical Resultsmentioning

confidence: 84%

The α particle as a canonically quantized multiskyrmion

2006

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The rational map approximation to the solution to the SU(2) Skyrme model with baryon number B = 4 is canonically quantized. The quantization procedure leads to anomalous breaking of the chiral symmetry, and exponential falloff of the energy density of the soliton at large distances. The model is extended to SU(2) representations of arbitrary dimension. These soliton solutions capture the double node feature of the empirical α particle charge form factor, but as expected lead to a too compact matter distribution. Comparison to phenomenology indicates a preference for the fundamental representation. PACS numbers: 12.39Dc, 21.10Dr

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Structure of theHe4Nucleus from Elastic Electron Scattering

Cited by 438 publications

References 10 publications

Structure of 14C and 14O Nuclei Calculated in the Variational Approach

Structure of 14C and 14O Nuclei Calculated in the Variational Approach

Limits on cosmological variation of strong interaction and quark masses from big bang nucleosynthesis, cosmic, laboratory and Oklo data

The α particle as a canonically quantized multiskyrmion

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