The identification of glueballs - further tests

Abstract

The indirect evidence for gluonic objects in gluon jets is recalled, more accurate tests at the LHC are possible. Estimates of gluonic and quarkonic components of scalar mesons are presented, which could be improved by further studies, in particular of B and B_s decays. The results are consistent with the scalar glueball mixing into f_0(500) and f_0(1500). The study of symmetry relations for 2-body decay rates of charmonium \chi_c is suggested as crucial test in the identification of q\bar q multiplets and glueballs. Further related results are discussed in the recent review \cite{Ochs:2013gi}.