Nonrelativistic quark model analysis of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>

Abstract

The recent discovery of the doubly charmed tetraquark ${T}_{cc}$ ($\overline{u}\overline{d}cc$) provides a stringent constraint on its binding energy relative to its lowest decay threshold. We use a fully convergent spatial wave function and perform a simultaneous global fit to both the meson and baryon spectra. Our analysis shows that a Yukawa type hyperfine potential leads to a slight bound state for ${T}_{cc}$ with $(I,S)=(0,1)$ below its lowest threshold, in agreement with recent experimental findings. We also find that ${T}_{cc}$ is highly likely to be in a compact configuration.

Topics & Concepts