Nucleon–meson coupling constants and form factors in the quark model
نویسندگان
چکیده
منابع مشابه
Inside Mesons: Coupling Constants and Form Factors
In this work the dressed quark propagators and approximation schemes are guided by the Dyson-Schwinger equation (DSE) approach to non-perturbative QCD modeling of hadron physics. This covariant QCD phenomenology has proved to be quite efficient for low-mass mesons and their form factors. To expedite investigations we make use of a convenient parameterization of confining solutions of quark DSEs...
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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...
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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...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2006
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2006.05.084