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arXiv · 1903.10253

The Hydrogen Bond of QCD

L. Maiani·A. D. Polosa·V. Riquer
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Abstract

Using the Born-Oppenheimer approximation, we show that exotic resonances, X and Z, may emerge as QCD molecular objects made of colored two-quark lumps, states with heavy-light diquarks spatially separated from antidiquarks. With the same method we confirm that doubly heavy tetraquarks are stable against strong decays. Tetraquarks described here provide a new picture of exotic hadrons, as formed by the QCD analog of the hydrogen bond of molecular physics.

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L. Maiani, A. D. Polosa, V. Riquer. 2019-05-17. The Hydrogen Bond of QCD. https://doi.org/10.1103/physrevd.100.014002

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