Erratum: Semileptonic decayΛb→Λc+τ−+ν¯τin the covariant confined quark model [Phys. Rev. D91, 074001 (2015)]

Erratum: "Virial coefficients and demixing in the Asakura-Oosawa model" [J. Chem. Phys. 142, 014902 (2015)].

Nucleons in the Covariant Quark–diquark Model

We introduce diquarks as separable correlations in the two–quark Green’s function to facilitate the description of baryons as relativistic three– quark bound states. These states then emerge as solutions of Bethe– Salpeter equations for quarks and diquarks that interact via quark exchange. Approximating quark and diquark propagators by the corresponding free ones, we calculate nucleon static pr...

Covariant oscillator quark model for baryons

An analytic resolution of the covariant oscillator quark model for baryons is presented. Our harmonic potential is a general quadratic potential which can simulate both a ∆-shaped configuration or a simplified Y configuration where the junction is located at the centre of mass. The addition of new terms simulating the one gluon exchange process and the quark self-energy is discussed, and a comp...

Covariant model for dynamical quark confinement

Based on a recent manifestly covariant time-ordered approach to the relativistic many-body problem, the quark propagator is defined by a nonlinear Dyson–Schwinger-type integral equation, with a one-gluon loop. The resulting energy-dependent quark mass is such that the propagator is singularity-free for real energies, thus ensuring confinement. The self-energy integral converges without regulari...

Semileptonic meson decays in the quark model: An update.

We present the predictions of ISGW2, an update of the ISGW quark model for semileptonic meson decays. The updated model incorporates a number of features which should make it more reliable, including the constraints imposed by Heavy Quark Symmetry, hyperfine distortions of wave-functions, and form factors with more realistic high recoil behaviors. It has been nearly ten years since the ISGW mod...