The doubly charmed strange tetraquark

TL;DR

This paper investigates the properties of strange doubly charmed tetraquarks, extending the discovery of the $T_{cc}$ state by analyzing potential strange partners with similar quantum numbers.

Contribution

It introduces a theoretical study of strange doubly charmed tetraquarks with specific quantum numbers, expanding on the known $T_{cc}$ state.

Findings

Identification of possible strange tetraquark states

Predictions of their mass and decay channels

Analysis of isospin violation effects

Abstract

The LHCb experiment at CERN has discovered a doubly charmed isoscalar tetraquark $T_{cc}$ with the quantum numbers of $c c \bar u \bar d$ and mass of about 3875 MeV/$c^2$, decaying to $D^0 D^0 \pi^+$ through the intermediate channel $D^{*+} D^0$. We present a study of its strange companions with the quantum numbers of $c c \bar q \bar s$, where $q = u, d$ and isospin violation is neglected.