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Possible S-wave Bound-States of Two Pseudoscalar Mesons

Yin-Jie Zhang·Huan-Ching Chiang·Peng-Nian Shen·Bing-Song Zou
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Abstract

Using the potentials derived from vector-meson-exchanges, the $K\bar K$, $DK$, $B\bar K$, $D\bar D$, $B\bar B$, $BD$, $\bar D K$, $BK$ and $B\bar D$ systems are studied. Possible S-wave bound-states of two pseudoscalar mesons are discussed. We find that systems of $DB$, $D\bar D$, $B\bar B$ and $DK$ with isospin 0 are likely to form S-wave bound states via strong interactions while the others are unlikely to be bound by the strong interaction sector alone. With the Coulomb potential, the $K^+K^-$ system can form an atomic bound state - the kaonium. The influence of the one-meson-exchange potential on the ground state energy of the kaonium and its decay widths to $ππ$ and $πη$ are evaluated.

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Yin-Jie Zhang, Huan-Ching Chiang, Peng-Nian Shen, Bing-Song Zou. 2006-04-28. Possible S-wave Bound-States of Two Pseudoscalar Mesons. https://doi.org/10.1103/physrevd.74.014013

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