Hadrons containing a heavy quark and QCD sum rules

Abstract

Masses and other parameters of mesons and baryons containing one heavy (c,b,...) quark are calculated by the QCD sum rule method developed by Shifman, Vainshtein and Zakharov. In our case the calculations are greatly simplified because the heavy quark acts like a static centre similar to the proton in a hydrogen atom. Analysis of the sum rules is more difficult, because the continuum contribution is more important. A brief discussion of ordinary baryons, the nucleon and its isobar, is also given.