The Hydrogen Bond of QCD
High Energy Physics - Phenomenology
2019-07-10 v2
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.
Keywords
Cite
@article{arxiv.1903.10253,
title = {The Hydrogen Bond of QCD},
author = {L. Maiani and A. D. Polosa and V. Riquer},
journal= {arXiv preprint arXiv:1903.10253},
year = {2019}
}
Comments
5 pages, 3 figures, comments and references added. Table 1 extended