Searching for doubly charmed tetraquark candidates $T_{cc}$ and $T_{cc\bar{s}}$ in $B_c$ decays

TL;DR

This paper investigates the potential production of exotic doubly charmed tetraquark states $T_{cc}$ and $T_{ccar{s}}$ in $B_c$ decays, estimating their branching ratios to guide future experimental searches.

Contribution

It introduces a molecular scheme analysis of $T_{cc}$ and $T_{ccar{s}}$ production in $B_c$ decays, providing estimated branching ratios for the first time.

Findings

Branching ratios estimated: $10^{-7}$ to $10^{-4}$.

Production mechanisms via rescattering processes analyzed.

Guidance for experimental searches in future collider experiments.

Abstract

In this work, we propose to search for the exotic doubly charmed meson $T_{cc}^+$ and its analog $T_{cc\bar{s}}^+$ in $B_c^+$ decays, which provide a good environment for the formation of the exotic state containing double charm quarks. Within the molecular scheme, the production of $T_{cc}^+$ and $T_{cc\bar{s}}^+$ through various rescattering processes with different intermediate states are investigated. For the moderate values of model parameters, the branching ratios of $B_c^+$ decaying into $T_{cc}^+ \bar{D}^{0}$, $T_{cc}^+ \bar{D}^{*0}$, $T_{cc\bar{s}}^+ \bar{D}^{0}$ and $T_{cc\bar{s}}^+ \bar{D}^{*0}$ are estimated to be of the order of $10^{-7}$, $10^{-5}$, $10^{-6}$ and $10^{-4}$, respectively, which may be tested by future experiments.