The role of nucleon structure in nuclear physics

Thomas, A. W.

doi:10.1016/0146-6410(96)00032-4

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…There have been several interesting applications to the properties of finite nuclei using the local-density approximation. Surprisingly, the model can provide a semi-quantitative explanation of the ONS anomaly when quark mass differences are included [13,14]. An application of the model, including quark mass differences, has also suggested a previously unknown correction to the extraction of the CKM matrix element, V ud , from super-allowed Fermi beta-decay, which would bring the discrepancy in the unitarity problem of the CKM matrix back to only one standard deviation [15,16].…”

Section: Introductionmentioning

confidence: 99%

Self-consistent description of finite nuclei based on a relativistic quark model

1996

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Relativistic Hartree equations for spherical nuclei have been derived from a relativistic quark model of the structure of bound nucleons which interact through the (self-consistent) exchange of scalar (σ) and vector (ω and ρ) mesons. The coupling constants and the mass of the σ-meson are determined from the properties of symmetric nuclear matter and the rms charge radius in 40 Ca. Calculated properties of static, closed-shell nuclei from 16 O to 208 Pb are compared with experimental data and with results of Quantum Hadrodynamics (QHD). The dependence of the results on the nucleon size and the quark mass is investigated. Several possible extensions of the model are also discussed.

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Section: Introductionmentioning

confidence: 99%

Self-consistent description of finite nuclei based on a relativistic quark model

1996

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“…We have already explained that a relativistic field theory only yields the right order of magnitude for nuclear charge symmetry breaking if the relevant mass scale involves quarks rather than nucleons [26]. In this sense the ONS anomaly may prove to be something of a "smoking gun" for quark degrees of freedom in nuclei.…”

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confidence: 98%

Effect of nucleon structure variation in super-allowed Fermi beta-decay

Saito¹,

Thomas²

1995

Physics Letters B

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There is a well known anomaly between the value of the Fermi decay constant extracted from super-allowed Fermi beta-decay of nuclear isotriplets and that required by unitarity of the Cabibbo-Kobayashi-Maskawa matrix. This discrepancy remains at the level of a few tenths of a percent after the most rigorous investigation of conventional nuclear and radiative corrections. Within the framework of the quark-meson coupling model of nuclear matter, which has been previously applied successfully to phenomena such as nuclear saturation and nuclear charge symmetry violation, we show that it is possible to understand a significant fraction of the observed anomaly.

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The role of nucleon structure in nuclear physics

Cited by 2 publications

References 31 publications

Self-consistent description of finite nuclei based on a relativistic quark model

Self-consistent description of finite nuclei based on a relativistic quark model

Effect of nucleon structure variation in super-allowed Fermi beta-decay

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