PT Journal
AU Mathieu, V
   Vento, V
TI Pseudoscalar glueball and eta-eta ' mixing
SO Physical Review D
JI Phys. Rev. D
PY 2010
BP 034004
EP 12pp
VL 81
IS 3
DI 10.1103/PhysRevD.81.034004
LA English
AB We have performed a dynamical analysis of the mixing in the pseudoscalar channel with the goal of understanding the existence and behavior of the pseudoscalar glueball. Our philosophy has not been to predict precise values of the glueball mass but to exploit an adequate effective theory to the point of breaking and to analyze which kind of mechanisms restore compatibility with data. Our study has led to analytical solutions which allow a clear understanding of the phenomena. The outcome of our calculation leads to a large mass glueball M-Theta > 2000 MeV, to a large glue content of the eta ', and to mixing angles in agreement with previous numerical studies.
ER