Abstract
We test the Electric Charged Swap (ECS) symmetry in the case of quarks. We propose a quark (q)- and an ECS-quark (q῀)-bound state, qq῀. We explain the electrically charged charmonium Z+c (3, 9) meson as a charm quark (c)- and charm ECS-quark (c῀)- nonrelativistic bound state (cc῀). We predict that J/ψ and π+ mesons are the decay products of a Z+c (3, 9), as it has been recently observed at the Beijing Electron Positron Collider (BES) III. Furthermore, from the charm ECS-quark (c῀) of mass 2,3GeV we predict two new mesons, an electrically charged charmed meson D¯*+(zm) and a neutral charmed meson D*0(zm).
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