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The charmonium-like resonance $ Z_c(3900) $ and its excited state $ Z(4430) $are among the particles that are serious candidates for double heavytetraquarks. Calculations of different parameters associated with these statesboth in the vacuum and the medium with finite density are of great importance.Such investigations help us clarify their nature, internal quark-gluonorganization and quantum numbers. In this accordance, we extend our previousanalyses on the ground state $ Z_c(3900) $ to investigate the mediummodifications on different parameters of the excited $ Z(4430) $ state. Inparticular, we calculate the mass, vector self-energy and current coupling of $Z(4430) $ in terms of density, up to a density comparable to the density of thecores of massive neutron stars. The obtained results may help experimentalgroups aiming to study the behavior of exotic states at higher densities.

Modifications on parameters of $Z(4430)$ in a dense medium