Hybrid Meson Potentials and the Gluonic van der Waals Force

Abstract

The chromoelectric polarizability of mesons governs the strength of the gluonic van der Waals force and therefore of non-quark-exchange processes in hadronic physics. We compute the polarizability of heavy mesons with the aid of lattice gauge theory and the Born--Oppenheimer adiabatic expansion. We find that the operator product expansion breaks down at surprisingly large quarks masses due to nonperturbative gluodynamics and that previous conclusions concerning $J/\psi$--nuclear matter interactions and $J/\psi$ dissociation in the quark-gluon plasma must be substantially modified.

5 pages, RevTex, 2 ps figures. Version to appear in Phys. Lett. B

References in corpus (1)

• Potential NRQCD: an effective theory for heavy quarkonium

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