Decay of the pseudoscalar glueball into scalar and pseudoscalar mesons
Walaa I. Eshraim, Stanislaus Janowski, Francesco Giacosa, and Dirk H., Rischke
TL;DR
This paper develops a chiral Lagrangian model to predict decay patterns of a pseudoscalar glueball into mesons, providing parameter-free branching ratios relevant for upcoming experiments like PANDA.
Contribution
It introduces a novel parameter-free approach to calculate decay channels of pseudoscalar glueballs based on a chiral Lagrangian framework.
Findings
Predicted decay channels for a 2.6 GeV pseudoscalar glueball.
Calculated decay patterns for a 2.37 GeV glueball matching BESIII data.
Branching ratios are parameter-free predictions.
Abstract
We study a chiral Lagrangian which describes the two- and three-body decays of a pseudoscalar glueball into scalar and pseudoscalar mesons. The various branching ratios are a parameter-free prediction of our approach. We compute the decay channels for a pseudoscalar glueball with a mass of 2.6 GeV, as predicted by Lattice QCD in the quenched approximation, which is in the reach of the PANDA experiment at the upcoming FAIR facility. For completeness, we also repeat the calculation for a glueball mass of 2.37 GeV which corresponds to the mass of the resonance X(2370) measured in the BESIII experiment.
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