A new interpretation for the $D^*_{s2}(2573)$ and the prediction of novel exotic charmed mesons

TL;DR

This paper uses a coupled channel approach within the hidden gauge formalism to interpret the $D^*_{s2}(2573)$ resonance and predicts new exotic charmed mesons as molecular states, expanding understanding of heavy meson interactions.

Contribution

It provides a novel interpretation of the $D^*_{s2}(2573)$ and predicts nine new exotic molecular states in heavy meson sectors not previously observed.

Findings

Identified a pole corresponding to $D^*_{s2}(2573)$ in the $C=1,S=1,J=2$ sector.

Predicted nine exotic molecular states with various charm and strangeness quantum numbers.

Proposed these states as $D^*ar{K^*}$, $D^*D^*$, and $D^*_sD^*$ molecules.

Abstract

In this manuscript we study the vector - vector interaction within the hidden gauge formalism in a coupled channel unitary approach. In the sector $C=1,S=1,J=2$ we get a pole in the T-matrix around $2572$ MeV that we identify with the $D^*_{s2}(2573)$, coupling strongly to the $D^*K^*$($D^*_s\phi$($\omega$)) channels. In addition we obtain resonances in other exotic sectors which have not been studied before such as $C=1,S=-1$, $C=2,S=0$ and $C=2,S=1$. This 'flavor-exotic' states are interpreted as $D^*\bar{K^*}$, $D^*D^*$ and $D^*_sD^*$ molecular states but have not been observed yet. In total we obtain nine states with different spin, isospin, charm and strangeness of non $C=0,S=0$ and $C=1,S=0$ character, which have been reported before.