A prediction of $D^*$-multi-$\rho$ states

TL;DR

This paper predicts new charmed resonances, named $D^*_3$ to $D^*_6$, by studying multi-body interactions involving $D^*$ and $ ho$ mesons using a theoretical formalism.

Contribution

It introduces a novel theoretical approach to predict charmed resonances as multi-$ ho$ and $D^*$ states using the hidden gauge formalism and Fixed Center Approximation.

Findings

Identification of resonant structures above 2800 MeV

Prediction of new charmed resonances $D^*_3$ to $D^*_6$

Resonances analogous to known multi-$ ho$ states

Abstract

We present a study of the many-body interaction between a $D^*$ and multi-$\rho$. We use an extrapolation to SU(4) of the hidden gauge formalism, which produced dynamically the resonances $f_2(1270)$ in the $\rho\rho$ interaction and $D^*_2(2460)$ in the $\rho D^*$ interaction. Then let a third particle, $\rho$, $D^*$, or a resonance collide with them, evaluating the scattering amplitudes in terms of the Fixed Center Approximation of the Faddeev equations. We find several clear resonant structures above $2800\mev$ in the multibody scattering amplitudes. They would correspond to new charmed resonances, $D^*_3$, $D^*_4$, $D^*_5$ and $D^*_6$, which are not yet listed in the PDG, which would be analogous to the $\rho_3(1690)$, $f_4(2050)$, $\rho_5(2350)$, $f_6(2510)$ and $K^*_3(1780)$, $K^*_4(2045)$, $K^*_5(2380)$ described before as multi-$\rho$ and $K^*$-multi-$\rho$ states respectively.