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The spectra of pΛ¯ $$p\\bar{\\Lambda }$$ and pΣ¯ $$p\\bar{\\Sigma }$$ hexaquark states
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The spectra of pΛ¯ $$p\\bar{\\Lambda }$$ and pΣ¯ $$p\\bar{\\Sigma }$$ hexaquark states
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Journal Article
The spectra of pΛ¯ $$p\\bar{\\Lambda }$$ and pΣ¯ $$p\\bar{\\Sigma }$$ hexaquark states
2025
Overview
Motivated by the recent observation of the JP=1+ resonance X(2085) in the pΛ¯ system by the BESIII collaboration, we study the molecular states of pΛ¯ and pΣ¯ with baryon-antibaryon structures within the framework of the QCD sum rules. Non-perturbative contributions up to dimension 13 in quark operator expansion (OPE) are considered. Our calculation results indicate the possible existence of six pΛ¯ and pΣ¯ molecular states with quantum numbers JP=0-,0+,1- , which do not support X(2085), or at least not its main component, being a pΛ¯ or pΣ¯ molecular state. Additionally, the previously observed state X(2075) also lies in the vicinity of pΛ¯ and pΣ¯ molecular states, and its inner structure might not be entirely transparent, rather possibly a mixture of tetraquark and hexaquark states. The possible decay modes of the concerned states are analyzed.
Publisher
Springer Nature B.V
Subject
