منابع مشابه
Mesonic Form Factors in the Light-front Quark Model
Form factors for P → P and P → V transitions due to the valence-quark configuration are calculated directly in the physical time-like range of momentum transfer within the light-front quark model. It is pointed out that the Bauer-Stech-Wirbel type of light-front wave function fails to give a correct normalization for the IsgurWise function at zero recoil in P → V transition. Some of the P → V f...
متن کاملStrange nucleon form factors in the perturbative chiral quark model
We apply the perturbative chiral quark model at one loop to calculate the strange form factors of the nucleon. A detailed numerical analysis of the strange magnetic moments and radii of the nucleon, and also the momentum dependence of the form factors is presented. PACS: 12.39.Fe, 12.39.Ki, 13.40.Gp, 14.20.Dh
متن کاملNucleon Form Factors in the Covariant Diquark–Quark Model
The nucleon is described as a bound state of a quark and an extended diquark. Hereby the notion “diquark” refers to the modelling of separable correlations in the two–quark Green’s functions. Binding of quarks and diquarks takes place via an exchange interaction and is therefore related to the Pauli principle for three– quark states. Fully Poincaré covariant nucleon amplitudes are calculated fo...
متن کاملBaryonic Form Factors in the Nonrelativistic Quark Model
Weak current-induced baryonic form factors at zero recoil are evaluated in the rest frame of the heavy parent baryon using the nonrelativistic quark model. Contrary to previous similar work in the literature, our quark model results do satisfy the constraints imposed by heavy quark symmetry for heavy-heavy baryon transitions. Assuming a dipole q behavior, we have applied the quark model form fa...
متن کاملElectromagnetic Form Factors and the hypercentral constituent quark model
We briefly report on results about the electromagnetic form factors of the nucleon obtained with different models and then we concentrate our attention on recent results obtained with the hypercentral constituent quark model (hCQM). PACS. 13.40 Gp Electromagnetic form factors
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2008
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.77.053001