English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The spectrum of the charmed meson-(anti)meson system is a fundamental toolfor disentangling the nature of a few exotic hadrons, including the recentlydiscovered $T_{cc}^+(3875)$ tetraquark, the $X(3960)$, or the $X(3872)$, thenature of which is still not clear after almost two decades of its discovery.Here we consider that the charmed meson-(anti)meson short-range interaction isdescribed by the exchange of light-mesons ($\sigma$, $\rho$, $\omega$). Theeffects of light-meson exchanges are recast into a simple contact-range theoryby means of a saturation procedure, resulting in a compact description of thetwo-hadron interaction. From this, if the $T_{cc}^+$ were to be an isoscalar$D^* D$ molecule, then there should exist an isoscalar $J=1$ $D^* D^*$ partner,as constrained by heavy-quark spin symmetry. Yet, within our model, the mostattractive two charmed meson configurations are the isovector $J=0$ $D^* D^*$molecule and its sextet $D_s^* D^*$ and $D_s^* D_s^*$ flavor partners. Finally,we find a tension between the molecular descriptions of the $T_{cc}^+$ and thatof the $X(3872)$ and $X(3960)$, where most parameter choices suggest that ifthe $T_{cc}^+$ is purely molecular then the $X(3872)$ overbinds (or conversely,if the $X(3872)$ is a molecule the $T_{cc}^+$ does not bind). This might beconsequential for determining the nature of these states.

Heavy- and light-flavor symmetry partners of the $T_{cc}^+(3875)$, the $X(3872)$ and the $X(3960)$ from light-meson exchange saturation