Recently, several LQCD simulations have proven that the interaction in the isoscalar channel in DD∗ scattering is attractive. This channel is naturally connected to the Tcc(3875)+ which is observed in the D0D0π+ invariant mass distribution. However, it remains an open question whether the virtual bound state found in the several LQCD simulations is actually linked to the LHCb experimental observation. In this article we perform an EFT-based analysis of the LQCD data and demostrate that a proper chiral extrapolation leads to a Tcc pole compatible with experiment. At the physical pion mass, we find a virtual bound state with a binding energy ΔE=−0.06(−2.20+1.30)(−1.11+0.50). Moreover, we extract from a global analysis both, the light and heavy quark mass dependence of the Tcc pole, and study the role of the ρ and π meson exchanges.
@article{arxiv.2409.15141,
title = {Quark mass dependence of the $T_{cc}(3875)^+$ pole},
author = {F. Gil-Domínguez and A. Giachino and R. Molina},
journal= {arXiv preprint arXiv:2409.15141},
year = {2025}
}