Gluon Mass, Glueballs and Gluonic Mesons

Details Gluon Mass, Glueballs and Gluonic Mesons Gluon Mass, Glueballs and Gluonic Mesons

2011-02-18

arxiv.org/abs/1102.3875v1

PoS FacesQCD:002,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 6 figures. Contribution for the workshop "The many faces of QCD", 1-5 Nov 2010, Ghent, Belgium

Scientific paper

We review the phenomenological and theoretical evidences for dynamical gluon mass generation and the main features of the glueball spectrum in (pure gauge) Yang-Mills theories. The mixing between glueball and conventional $\bar q q$ states in $f_0$ scalar mesons is discussed. For pseudoscalar mesons, the inclusion of the glue field in an effective low energy theory is presented leading to a third isoscalar $\eta''$ partner of the $\eta$ and $\eta'$. Branching ratios for processes involving $\eta''$ are given and, when available, compatible with data for $\eta(1405)$.

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