Resonances f0(1370), f0(1500) and f0(1710) within the extended Linear Sigma Model

Abstract

In the framework of the extended Linear Sigma Model (eLSM) we investigate the masses and decays of the three scalar-isoscalar resonances $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$. The degrees of freedom of the eLSM are (pseudo)scalars and (axial)vectors as well as the scalar glueball. Although still preliminary, present results, based on the physical masses of the above mentioned resonances, show that $f_0(1710)$ is the predominantly glueball state. However, acceptable decays for this resonance can be obtained only for a (very) large gluon condensate.

Comments: Prepared for the proceedings of FAIRNESS - Workshop for young scientists with research interests focused on physics at FAIR, Berlin/Germany, 15-21 September 2013. 5 pages