【摘 要】
：
In this work,we study the strong decay of the newly observed Pcs(4459),assuming that it is a pure Ξc(D)* molecular state.Consid-ering two possible spin-parity assignments JP =1/2-and JP =3/2-,the partial decay widths of the Ξc(D)* molecular state into J/φ
【机 构】
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School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China;School
【出 处】
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中国科学：物理学 力学 天文学（英文版）
论文部分内容阅读
In this work,we study the strong decay of the newly observed Pcs(4459),assuming that it is a pure Ξc(D)* molecular state.Consid-ering two possible spin-parity assignments JP =1/2-and JP =3/2-,the partial decay widths of the Ξc(D)* molecular state into J/φA,D-s(△)A+c,and (D)Ξ(\')c final states through hadronic loops are evaluated with the help of the effective Lagrangians.In compari-son with the LHCb data,the S-wave(D)*Ξc molecular with JP =1/2-assignment for Pcs(4459) is supported by our study,while the Pcs(4459) in spin-parity JP =3/2-case may be explained as an S-wave coupled bound state with lager Ξc(D)* component.In addition,the calculated partial decay widths with JP =1/2-Ξ(D)* molecular state picture indicate that allowed decay mode,(D)Ξ\'c,may have the biggest branching ratio.The experimental measurements for this strong decay process could be a crucial test for the molecule interpretation of the Pcs(4459).
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