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This is a Quantitative Study study.

October 10, 2025Open Access

Heavy mesons to open-charmed tetraquark decays

Key Points

Heavy mesons demonstrate complex decay paths to open-charmed tetraquark states, revealing intricate interactions.
Analysis of strong and weak decay amplitudes shows a distinctive flavor pattern that could indicate exotic states.
By utilizing a topological amplitude approach, the study dissects multiple decay modes to clarify particle behavior.
Implications of these decays could redefine our understanding of heavy mesons and their decay processes.

Abstract

Motivated by the recent observations of Tcs0*(2870)0, Tcs¯0*(2900)0, and Tcs¯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→DP and DS 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 B¯→DT¯, D¯T, B¯→TP, and TS decays are decomposed topologically. In addition, Bc−→TT¯ decays are also discussed. Using these results, modes with an unambiguous exotic interpretation in flavor are highlighted.

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