Quarkonium Mass Splitting Revisited: Effects of Closed Mesonic Channels

Details Quarkonium Mass Splitting Revisited: Effects of Closed Mesonic Channels Quarkonium Mass Splitting Revisited: Effects of Closed Mesonic Channels

1998-04-22

arxiv.org/abs/hep-ph/9804360v1

Phys.Lett. B446 (1999) 43-47

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, plain LaTeX

Scientific paper

Modifications of the mass spectrum the quarkonium induced by its virtual
dissociation into a pair of heavy mesons is considered. Coupling between quark
and mesonic channels results in noticeable corrections to spin-dependent mass
splitting. In particular, the observable hierarchy of mass splittings in the
$\chi_c, \chi_b$ and $\chi'_b$ multiplets is reproduced.

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