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Zhang, Jian-Rong
The European physical journal. C, Particles and fields, 12/2019, Letnik: 79, Številka: 12Journal Article
Stimulated by the new discovery of P c ( 4312 ) + by LHCb Collaboration, we endeavor to perform the study of P c ( 4312 ) + as a Σ c D ¯ state in the framework of QCD sum rules. Taking into account the results from two sum rules, a conservative mass range 4.07 ∼ 4.97 GeV is presented for the Σ c D ¯ hadronic system, which agrees with the experimental data of P c ( 4312 ) + and could support its interpretation as a Σ c D ¯ state.
