Heavy quark spin symmetry breaking in near-threshold JPC=1 - quarkoniumlike resonances

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Abstract

A mixing of near-threshold quarkoniumlike resonances with heavy meson-antimeson pairs results in an enhancement of heavy quark spin symmetry breaking, since the meson pairs are not eigenstates of the heavy quark spin. The decomposition of P-wave states of meson pairs in terms of the heavy quark pair spin states is considered in the channel with JPC=1 -, which is directly produced in e +e - annihilation. Specific processes are suggested for experimental study of the effects of the mixing with heavy meson pairs and of the internal spin structure of bottomonium and charmonium resonances.

Original languageEnglish (US)
Article number034024
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number3
DOIs
StatePublished - Feb 14 2012

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