S-wave calculations predict bound and resonant states in trilepton and tetralepton systems made of electrons and muons, including the first muon-containing tetralepton resonances.
Second bound state of the positronium molecule and biexcitons
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abstract
A new, hitherto unknown bound state of the positronium molecule, with orbital angular momentum L=1 and negative parity is reported. This state is stable against autodissociation even if the masses of the positive and negative charges are not equal. The existence of a similar state in two-dimension has also been investigated. The fact that the biexcitons have a second bound state may help the better understanding of their binding mechanism.
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Trilepton and tetralepton bound and resonant states: the QED counterpart of multiquark states
S-wave calculations predict bound and resonant states in trilepton and tetralepton systems made of electrons and muons, including the first muon-containing tetralepton resonances.