Predictions for feed-down enhancements at the Λ c D ¯ and Λ c D ¯ thresholds via the triangle and box singularities

We demonstrate that triangle singularity (TS) and box singularity (BS) mechanisms can produce unique narrow enhancements at the Λ c D ¯ and Λ c D ¯ * thresholds in the invariant mass spectra of J / ψ p and J / ψ p π , respectively. Taking into account that such mechanisms only depend on the initial...

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Veröffentlicht in:	Physical review. D 2024-02, Vol.109 (3), Article L031507
Hauptverfasser:	Duan, Ming-Xiao, Qiu, Lin, Ling, Xi-Zhe, Zhao, Qiang
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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