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Analysis of the Ξb(6227) as the \(\frac {1}{2}^{\pm }\) Pentaquark Molecular States with QCD Sum Rules

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Abstract

In this paper, we design the Ξb(6227) as the pentaquark molecular states with quantum numbers \(J^{P}=\frac {1}{2}^{\pm }\) to study its inner structure. We employ the QCD sum rule approach to calculate the masses and pole residues of pentaquark molecular states by taking the vacuum condensates up to dimension 13 in the operator product expansion. In comparison with the experiment data, it is found that our calculation results support assigning the Ξb(6227) to be the pentaquark molecular state with quantum number \(J^{P}=\frac {1}{2}^{-}\).

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Acknowledgements

This work is supported by National Natural Science Foundation, Grant Number 11775079.

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Authors and Affiliations

  1. Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China

    Hui-Juan Wang, Zun-Yan Di & Zhi-Gang Wang

  2. School of Nuclear Sicence and Engineering, North China Electric Power University, Beijing, 102206, People’s Republic of China

    Hui-Juan Wang

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  1. Hui-Juan Wang
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  2. Zun-Yan Di
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  3. Zhi-Gang Wang
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Correspondence to Zhi-Gang Wang.

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Wang, HJ., Di, ZY. & Wang, ZG. Analysis of the Ξb(6227) as the \(\frac {1}{2}^{\pm }\) Pentaquark Molecular States with QCD Sum Rules. Int J Theor Phys 59, 3124–3133 (2020). https://doi.org/10.1007/s10773-020-04566-2

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  • DOI: https://doi.org/10.1007/s10773-020-04566-2

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