Exotic \(\Omega\Omega\) dibaryon states in a molecular picture

We investigate the exotic \(\Omega\Omega\) dibaryon states with \(J^P=0^+\) and \(2^+\) in a molecular picture. We construct the scalar and tensor $\Omega$$\Omega\( molecular interpolating currents and calculate their masses within the method of QCD sum rules. Our results indicate that the mass of t...

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Bibliographic Details
Published inarXiv.org
Main Authors Xiao-Hui, Chen, Qi-Nan, Wang, Chen, Wei, Hua-Xing, Chen
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 26.06.2019
Subjects
Ionic collisions
Mathematical analysis
Strangeness
Sum rules
Tensors
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Summary:We investigate the exotic \(\Omega\Omega\) dibaryon states with \(J^P=0^+\) and \(2^+\) in a molecular picture. We construct the scalar and tensor $\Omega$$\Omega\( molecular interpolating currents and calculate their masses within the method of QCD sum rules. Our results indicate that the mass of the scalar dibaryon state is \)m_{\Omega\Omega, \, 0^+}=(3.33\pm0.22) \,\unit\(, which is about \)15 \,\mathrm{MeV}\( below the \)2m_\Omega\( threshold. This result suggests the existence of a loosely bound molecular state of the \)J^P=0^+\( scalar \)\Omega\Omega\( dibaryon with a small binding energy around 15 MeV. The mass of the tensor dibaryon is predicted to be \)m_{\Omega\Omega,\, 2^+}=(3.24\pm0.23)\, \mbox{GeV}\(, which may imply a deeper molecular state of the tensor \)\Omega\Omega\( dibaryon than the scalar channel. These exotic strangeness \)S=-6\( and doubly-charged \)\Omega\Omega$ dibaryon states may be identified in the heavy-ion collision processes.
ISSN:2331-8422
DOI:10.48550/arxiv.1906.11089