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Properties of the $T {cc}(3875)^+$ and $T {\bar c\bar c}(3875)^-$ (and their heavy-quark spin partners) in nuclear matter by Montesinos, Victor; Albaladejo, Miguel; Nieves, Juan; Tolos, Laura is a scholarly article available to read on EtoBox.

What is Properties of the $T {cc}(3875)^+$ and $T {\bar c\bar c}(3875)^-$ (and their heavy-quark spin partners) in nuclear matter about?

We discuss the modification of the properties of the tetraquark-like $T_{cc}(3875)^+$ and $T_{\bar c\bar c}(3875)^-$ states in dense nuclear matter. We consider the $T_{cc}^+$ and $T_{\bar c\bar c}^-$ in vacuum as purely isoscalar $D^{\ast} D$ and $\overline{D}{}^{\ast} \overline{D}$ $S$-wave bound states, respectively, dynamically generated from a heavy-quark effective interaction between the charmed mesons. We compute the $D$, $\overline{D}$, $D^*$, and $\overline{D}{}^{*}$ spectral functions embedded in a nuclear medium and use them to determine the corresponding $T_{cc}^+$ and $T_{\bar c\bar c}^-$ self energies and spectral functions. We find important modifications of the $D^{\ast} D$ and $\overline{D}{}^{\ast} \overline{D}$ scattering amplitudes and of the pole position of these exotic states already for $\rho_0/2$, with $\rho_0$ the normal nuclear density. We also discuss the dependence of these results on the $D^{\ast} D$ ($\overline{D}{}^{\ast} \overline{D}$) molecular component in the $T_{cc}^+$ ($T_{\bar c\bar c}^-$ ) wave-function. Owing to the different nature of the $D^{(*)}N$ and $\overline{D}{}^{(*)}N$ interactions, we find characteristic changes of the in-medium pr

Author

Montesinos, Victor; Albaladejo, Miguel; Nieves, Juan; Tolos, Laura

Published

2023

Language

EN