Mass suppression in octet baryon production

Mass Suppression in Octet Baryon Production

There is a striking suppression of the cross section for production of octet baryons in e+e− annihilation, as the mass of the produced hadron increases. We present a simple parametrization for the fragmentation functions into octet baryons guided by two input models: the SU(3) flavor symmetry part is given by a quark-diquark model, and the baryon mass suppression part is inspired by the string ...

Discontinuous quark-mass dependence of baryon octet and decuplet masses

The present-day interpretation of QCD lattice simulations requires a profound understanding of the dependence of observable quantities on the light quark masses. A powerful tool to derive such dependencies is the chiral Lagrangian, an effective field theory based on the chiral properties of QCD. The application of strict chiral perturbation theory to the SU(3) flavor sector of QCD is plagued by...

Dynamically generated resonances from the vector octet-baryon octet interaction

We study the interaction of vector mesons with the octet of stable baryons in the framework of the local hidden gauge formalism using a coupled channels unitary approach. We examine the scattering amplitudes and their poles, which can be associated to known JP = 1/2−, 3/2− baryon resonances, in some cases, or give predictions in other ones. The formalism employed produces doublets of degenerate...

Octet-baryon Form Factors in the Diquark

We present an alternative parameterization of the quark-diquark model of baryons which particularly takes care of the most recent proton electric form-factor data from the E136 experiment at SLAC. In addition to electromagnetic form factors of the nucleon, for which good agreement with data is achieved, we discuss the weak axial vector form factor of the nucleon as well as electromagnetic form ...

Title Resonating-group study of baryon-baryon interactions for the complete baryon octet: NN interaction