Twelve-quark hypernuclei with A = 4 in a relativistic quark–gluon model

4 Θ + hypernuclei in relativistic mean field model

We have investigated the properties of Θ + in nuclei within the framework of relativistic mean field. The coupling constants are educed with quark meson coupling model. There is strong attractive interaction for Θ +-nucleus and Θ + can be bind in nuclei. The depth of optical potential for Θ + in nuclear matter is estimated.

0 in a relativistic quark model

∗)l̄l in a relativistic quark model

We study the exclusive rare decay B → K(K∗)l̄l with special emphasis on the cascade decay B → K∗(→ Kπ)l̄l. We derive a four-fold angular decay distribution for this process in terms of helicity amplitudes including lepton mass effects. The four-fold angular decay distribution allows to define a number of physical observables which are amenable to measurement. We calculate the relevant form factor...

Scalar Mesons in a Relativistic Quark Model with Instanton - Induced

In a relativistic quark model with linear confinement and an instanton-induced interaction which solves the η-η ′ puzzle, scalar mesons are found as almost pure SU(3) flavor states. This suggests a new interpretation of the scalar nonet: We propose that the recently discovered f 0 (1500) is not a glue-ball but the scalar (mainly)–octet meson for which the K ¯ K decay mode is suppressed. The mai...

The light baryon spectrum in a relativistic quark model with instanton-induced quark forces

This is the third of a series of papers treating light baryon resonances up to 3 GeV within a relativistically covariant quark model based on the Bethe-Salpeter equation with instantaneous twoand three-body forces. In this last paper we extend our previous work [2] on non-strange baryons to a prediction of the complete strange baryon spectrum and a detailed comparison with experiment. We apply ...