Heavy meson thresholds in Born-Oppenheimer Effective field theory

Abstract

We consider heavy meson-antimeson pairs and their coupling to quarkonium in the context of nonrelativistic EFTs incorporating the adiabatic expansion. We work out all the leading order couplings of quarkonium to heavy meson-antimeson pairs and obtain their contributions to the masses and widths of quarkonia. We match the new potentials terms to NRQCD. Using the available lattice data for the coupled system of quarkonium and the lowest laying heavy meson-antimeson pair, we extract the mixing potential and use it to compute numerically the contributions of $D\bar{D}(B\bar{B})$ and $D_s{\bar{D}}_s(B_s{\bar{B}}_s)$ to the masses and widths of the charmonium (bottomonium) states for $l=0,1,2$ and up to $n=6$ covering the states in threshold region. When a quarkonium state and a heavy meson-antimeson pair are separated by small energy gaps, their interactions can be described by a threshold EFT with contact interactions. We work out the matching between the two EFTs obtaining the couplings of the threshold EFT in terms of the mixing potential and quarkonium wave functions.

28 pages, 11 figures. Typos corrected

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Cited by in corpus (11)

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• One Born$-$Oppenheimer Effective Theory to rule them all: hybrids, tetraquarks, pentaquarks, doubly heavy baryons and quarkonium
• Heavy hybrid decays to quarkonia
• Heavy-Quark spin symmetry breaking in the Born-Oppenheimer approximation
• Study of $I=0$ bottomonium bound states and resonances in $S$, $P$, $D$ and $F$ waves with lattice QCD static-static-light-light potentials
• Why quarkonium hybrid coupling to two S-wave heavy-light mesons is not suppressed
• The nature of ${\chi }_{c1}\left(3872\right)$ and $T_{cc}^{+}\left(3875\right)$
• Model-independent predictions for decays of hidden-heavy hadrons into pairs of heavy hadrons
• Born-Oppenheimer Potentials for $SU(3)$ Gauge Theory
• Effect of continuum states on the double-heavy hadron spectra
• QCD confronts heavy-flavor and exotic hadrons