Visible narrow cusp structure in Λc+→pK−π+ enhanced by triangle singularity

A resonance-like structure as narrow as 10 MeV is observed in the K−p invariant mass distributions in Λc+→pK−π+ at Belle. Based on the large data sample of about 1.5 million events and the small bin width of just 1 MeV for the K−p invariant mass spectrum, the narrow peak is found precisely lying at...

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Veröffentlicht in:	Physical review. D 2019-09, Vol.100 (5), p.1
Hauptverfasser:	Liu, Xiao-Hai, Li, Gang, Xie, Ju-Jun, Zhao, Qiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Cusps Invariants Quark models
Online-Zugang:	Volltext
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