Speaker
Description
In the last decade new, unexpected, quarkonium states close and above open flavor thresholds have been discovered. Some of these states are candidates for quarkonium hybrids, i.e states containg a gluonic excitation. Quarkonium hybrids are characterized by a set of well separated scales, in particular, the heavy quark and gluon dynamics have very different dynamical time scales, that be exploited in an effective field theory description. Using input from lattice computations, this effective field theory description can be used to obtain the quarkonium hybrid masses. We compare the results thus obtained with experimental observations and other determinations.
Summary
In the last decade new, unexpected, quarkonium states close and above open flavor thresholds have been discovered. Some of these states are candidates for quarkonium hybrids, i.e states containg a gluonic excitation. Quarkonium hybrids are characterized by a set of well separated scales, in particular, the heavy quark and gluon dynamics have very different dynamical time scales, that be exploited in an effective field theory description. Using input from lattice computations, this effective field theory description can be used to obtain the quarkonium hybrid masses. We compare the results thus obtained with experimental observations and other determinations.
