Two-particle Bound States: Mesons and Glueballs
Bogoliubov Laboratory of Theoretical Physics, Joint Institute
for Nuclear Research, 141980
2 Institute of Physics and Technology, 210651 Ulaanbaatar, Mongolia
a e-mail: firstname.lastname@example.org
A relativistic quantum-ﬁeld model based on analytic conﬁnement is considered to study the twoquark and two-gluon bound states. For the spectra of two-particle bound states we solve the ladder Bethe-Salpeter equation. We provide a new, independent and analytic estimate of the lowest glueball mass and found it at 1660 MeV. The conventional mesons and the weak decay constants are described to extend the consideration. By using a few parameters (the quark masses, the coupling constant and the conﬁnement scale) we obtain numerical results which are in reasonable agreement with experimental evidence in the wide range of energy scale from 140MeV up to 9 GeV. The model can serve a reasonable framework to describe simultaneously diﬀerent sectors in low-energy particle physics.
© Owned by the authors, published by EDP Sciences, 2010