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Heavy mesons to open-charmed tetraquark decays

Department of Physics and Center for High Energy Physics, Chung Yuan Christian University, Chung-Li, Taiwan 320, Republic of China

Phys. Rev. D 112, 076008 – Published 8 October, 2025

DOI: https://doi.org/10.1103/tt7k-yrbm

Abstract

Motivated by the recent observations of $T_{c s 0}^{*} (2870)^{0}$ , $T_{c \bar{s} 0}^{*} (2900)^{0}$ , and $T_{c \bar{s} 0}^{*} (2900)^{+ +}$ open-charmed tetraquark states by LHCb, we study the decays of heavy mesons to these open-charmed tetraquark states ( $T$ ) using a topological amplitude approach. We first obtain the $T \to D P$ and $D S$ strong decay amplitudes by decomposing them into several topological amplitudes, where $P$ is a light pseudoscalar particle and $S$ is a low-lying scalar particle. Subsequently, weak decay amplitudes of $\bar{B} \to D \bar{T}$ , $\bar{D} T$ , $\bar{B} \to T P$ , and $T S$ decays are decomposed topologically. In addition, $B_{c}^{-} \to T \bar{T}$ decays are also discussed. Using these results, modes with an unambiguous exotic interpretation in flavor are highlighted.

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Phys. Rev. D 112, 076008– Published 8 October, 2025

Vol. 112, Iss. 7 — 1 October 2025

Received 16 July 2025
Accepted 19 September 2025

DOI: https://doi.org/10.1103/tt7k-yrbm

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

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Heavy mesons to open-charmed tetraquark decays

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