Doubly Heavy Tetraquarks in the Born-Oppenheimer approximation
High Energy Physics - Phenomenology
2022-12-21 v2
Abstract
Tetraquarks QQq*q* are found to be described remarkably well with the Quantum Chromodynamics version of the Hydrogen bond, as treated with the Born-Oppenheimer approximation. We show the robustness of the method by computing the mass of the observed Tcc tetraquark following two different paths. Relying on this, we provide a prediction for the mass of the expected Tbb particle. The average sizes of tetraquarks are estimated to be approximately 3 - 5 GeV**-1. As a consequence hyperfine separations are not expected to be sizeable. We discussed possible reasons why LHCb has observed only one state in the DD* spectrum.
Keywords
Cite
@article{arxiv.2208.02730,
title = {Doubly Heavy Tetraquarks in the Born-Oppenheimer approximation},
author = {Luciano Maiani and Alessandro Pilloni and Antonio D. Polosa and Veronica Riquer},
journal= {arXiv preprint arXiv:2208.02730},
year = {2022}
}
Comments
8 pages, 1 figure. Corrections made. Improved draft. To appear in PLB