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Dispersion relations and the spin polarizabilities of the nucleon
(1998-02-26)
A forward dispersion calculation is implemented for the spin polarizabilities γ1, ⋯, γ4 of the proton and the neutron. These polarizabilities are related to the spin structure of the nucleon at low energies and are ...
Dispersion relations and the spin polarizabilities of the nucleon
(1998-02-26)
A forward dispersion calculation is implemented for the spin polarizabilities γ1, ⋯, γ4 of the proton and the neutron. These polarizabilities are related to the spin structure of the nucleon at low energies and are ...
Generalized polarizabilities and electroexcitation of the nucleon
(1999-11-15)
Generalized nucleon polarizabilities for virtual photons can be defined in terms of electroproduction cross sections as function of the 4-momentum transfer Q2. In particular, the sum of the generalized electric and magnetic ...
Generalized polarizabilities and electroexcitation of the nucleon
(1999-11-15)
Generalized nucleon polarizabilities for virtual photons can be defined in terms of electroproduction cross sections as function of the 4-momentum transfer Q2. In particular, the sum of the generalized electric and magnetic ...
Consistence between πn Δ spin-3/2 gauge couplings and electromagnetic gauge invariance
(IOP Publishing, 2015-11)
We review the consistency between the recently proposed spin-3/2 gauge interaction for Δ resonance with nucleons (N) and pions (π), and the fundamental electromagnetic gauge invariance in any radiative amplitude. We show ...
A estrutura do nucleon na QCD e o modelo estatístico a Quarks
(Universidade Estadual Paulista (Unesp), 2010-07-29)
Nessa tese, consideramos um modelo estatíıstico a quarks no qual todos os quarks individuais do sistema (quarks do mar e de valência) são confinados por uma interação efetiva central, relativística, com intensidade e ...
A estrutura do nucleon na QCD e o modelo estatístico a Quarks
(Universidade Estadual Paulista (Unesp), 2010-07-29)
Nessa tese, consideramos um modelo estatíıstico a quarks no qual todos os quarks individuais do sistema (quarks do mar e de valência) são confinados por uma interação efetiva central, relativística, com intensidade e ...