The subject of the strangeness content of the nucleon and nuclei has been one of the important issues in hadron and nuclear physics [1]. Production of φ meson from nucleon target has been suggested as a sensitive probe to study the strangeness content of the nucleon. Because of the ideal mixing with ω, φ meson is nearly a pure ss̄ state and its direct coupling to the nucleon must be suppressed b...

Using the QCD sum rules, we investigate the effects of temperature on the nucleon below the phase transition. The mass and width of the nucleon are analyzed using various parametrizations of the nucleon continuum. Overall, the nucleon mass is found to depend substantially on temperature variations in the quark condensate, irrespective of the continuum parametrization. Our results are compared w...

A novel soft-photon amplitude is proposed to replace the conventional Low soft-photon amplitude for nucleon-nucleon bremsstrahlung. Its derivation is guided by the standard meson-exchange model of the nucleon-nucleon interaction. This new amplitude provides a superior description of ppγ data. The predictions of this new amplitude are in close agreement with potential-model calculations, which i...

(Dated: May 3, 2004) Abstract It is shown how a bare three–nucleon force is incorporated into the formalism of the effective interaction approach for hyperspherical harmonics. As a practical example we calculate the ground state properties of 3H and 3He using the Argonne V18 nucleon–nucleon potential and the Urbana IX three–nucleon force. A very good convergence of binding energies and matter r...

Production cross sections of K and K− mesons have been measured in C+C collisions at beam energies per nucleon below and near the nucleon-nucleon threshold. At a given beam energy, the spectral slopes of the K− mesons are significantly steeper than the ones of the K mesons. The excitation functions for K and K− mesons nearly coincide when correcting for the threshold energy. In contrast, the K ...

Different momentum space Faddeev-like equations and their solutions for the radiative pd-capture and the three-nucleon photodisintegration of 3 He are presented. Applications are based on the AV18 nucleon-nucleon and the Urbana IX three nucleon forces. Meson exchange currents are included using the Siegert theorem. A very good agreement has been found in all cases indicating the reliability of ...