Holographic stability for non-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>q</mml:mi><mml:mover accent="true"><mml:mi>q</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover></mml:math> candidates

Abstract

In the context of bottom-up AdS/QCD models, we discuss how the configurational entropy can describe heavy non-$q\overline{q}$ states. Using the nonquadratic softwall model, introduced to describe nonlinear Regge trajectories, we parametrize different multiquark and exotic meson structures to describe ${Z}_{c}$, $\ensuremath{\psi}$, and ${Z}_{b}$ states as non-$q\overline{q}$ hadrons in terms of stability. We found that ${Z}_{c}$ is better described as a hybrid meson with one gluon tube, $\ensuremath{\psi}$ as hadrocharmonium, and ${Z}_{b}$ as hadronic molecule.

Topics & Concepts