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Are the new mesons qq̄ or meson meson bound states (deusons)

Authors: Nils A. Törnqvist;

Are the new mesons qq̄ or meson meson bound states (deusons)

Abstract

The new mesons which cannot find a place within the qq model, the f0(1370),f0(1525),f0(1590),f2(1520),ν(1440), and f1(1420), are discussed and it is suggested that some of these are deuteronlike two‐meson bound states, deusons. The contribution from one pion exchange to the binding energy between two ground state mesons is calculated. The calculations are most reliable in the heavy meson sector where one‐pion exchange alone is strong enough to form six deuteron‐like BB* and B*B* composites of DD* and D*D* states bound by pion exchange alone can be expected near the thresholds. For the light quark sector one needs additional short range attraction to form bound states. Assuming this, the quantum numbers and masses of the above mentioned new mesons are the same as those expected for the deusonic states composed of either (ρ±ω)/√2,KK* or K*K*. Possibily the X(3100) could be the first heliumlike four‐meson state composed of one K* and three ω’s or ρ’s, while X(3250) could be composed of K*K*ρω. A cruc...

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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