Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-11-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX2e, 7 eps figures
Scientific paper
The paper is devoted to the construction of low-energy quark scattering amplitudes. Bootstrap quark model allows to describe the light and heavy hadron spectroscopy based on three principles: unitarity, analicity and crossing symmetry. The resulting quark interaction appeared to be effectively short-range. This interaction is determined mainly by the exchange in the gluon channel: the constituent-gluon mass appeared to not be small. Our calculation indicates an important role of an interaction which is induced by instantons. Such an interaction is necessary for deriving both the pion mass and $\eta$-$\eta'$ mass splitting. However, due to the rules of $1/N_c$-expansion this interaction influences slightly the other channels while in the $\eta$-$\eta'$ channel it provides the correct values of masses and gives the angle of $\eta_1-\eta_8$ mixture close to that of the quark model. We discuss the possibility of constructing the amplitudes which take into account the quark confinement.
Bielefeld Susanne
Gerasyuta S. M.
No associations
LandOfFree
Bootstrap quark model and spectra masses, electromagnetic properties of low-lying hadrons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Bootstrap quark model and spectra masses, electromagnetic properties of low-lying hadrons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bootstrap quark model and spectra masses, electromagnetic properties of low-lying hadrons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-590353