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Beauty-full Tetraquarks
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abstract
In this article we present a calculation of the $bb\bar{b}\bar{b}$ tetraquark ground-state energy using a diffusion Monte Carlo method to solve the non-relativistic many-body system. The static potential for the four quark system is chosen to align with the flux-tube picture of QCD. Using this approach, we find that the $0^{++}$ state has a mass of $18.69\pm 0.03~\mbox{GeV}$, which is around 100 MeV below twice the $\eta_b$ mass. This bound state can behave as a four-lepton resonance via its decay to $\Upsilon(1S) \Upsilon(1S)^* \rightarrow \ell^+ \ell^- \ell^+ \ell^-$.
Forward citations
Cited by 3 Pith papers
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On the nature of fully-charmed four-quark exotic state $X(6900)$ from its photoproduction off nuclei
Nuclear photoproduction of X(6900) off carbon and tungsten is predicted to differ by 10-30% between compact-tetraquark, J/psi-psi(3770) molecular, and hybrid interpretations, potentially allowing future electron-ion c...
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Diffusion Monte Carlo study of deuteron-like fully light hexaquarks
Within the AL1 constituent-quark model, compact uuuddd hexaquarks lie well above baryon–baryon thresholds while dibaryon-like states are near-threshold molecular candidates, one deuteron-like but unbound by ~12 MeV.
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Fully-heavy tetraquarks: $bb\bar{c}\bar{c}$ and $bc\bar{b}\bar{c}$
For fully-heavy bbcc and bcbc tetraquarks, the chiral quark model finds no bound states but predicts several resonances above the two-meson thresholds.
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