Establishing the first hidden-charm pentaquark with strangeness

• Published in: The European physical journal. C, Particles and fields Vol. 81; no. 5; pp. 1 - 9
• Main Authors: Chen, Hua-Xing, Chen, Wei, Liu, Xiang, Liu, Xiao-Hai
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2021; Springer; Springer Nature B.V; SpringerOpen
• Subjects: Astronomy; Astrophysics and Cosmology; Atoms & subatomic particles; Elementary Particles; Experiments; Hadrons; Heavy Ions; Letter; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quarks; Strangeness; String Theory; Sum rules

We study the P cs ( 4459 ) 0 recently observed by LHCb using the method of QCD sum rules. Our results support its interpretation as the D ¯ ∗ Ξ c hadronic molecular state of either J P = 1 / 2 - or 3 / 2 - . Within the hadronic molecular picture, the three LHCb experiments observing P c and P cs sta...