Mass spectra of \(N\Omega\) dibaryons in the \(^{3}S_1\) and \(^{5}S_2\) channels

• Published in: arXiv.org
• Main Authors: Xiao-Hui, Chen, Qi-Nan, Wang, Chen, Wei, Hua-Xing, Chen
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 13.05.2021
• Subjects: Channels; Decay; Heavy ions; Ionic collisions; Mass spectra; Quarks; S waves; Sum rules
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2103.09739

We study the mass spectra of the \(N\Omega\) dibaryons in the \(^{3}S_1\) and \(^{5}S_2\) channels with \(J^{P}=1^{+}\) and \(2^{+}\) respectively, by using the method of QCD sum rules. We construct two dibaryon interpolating currents in the molecular picture and calculate their correlation functions and spectral densities up to dimension-16 condensates. Our results indicate that there may exist an \(N\Omega\) dibaryon bound state in the \(^{5}S_2\) channel with a binding energy of about \(21\ \mathrm{MeV}\). The masses of the \(^{3}S_1\) \(N\Omega\) dibaryons with \(J^{P}=1^{+}\) are predicted to be higher than the \(N\Omega\) and \(\Lambda\Xi\) thresholds, and thus can decay into these final states directly in S-wave. The \(N\Omega (^{5}S_2)\) dibaryon bound state can decay into the octet-octet final states \(\Lambda\Xi\) and \(\Sigma\Xi\) in D-wave via the quark rearrangement mechanism. The existence of these \(N\Omega\) dibaryons may be identified in the relativistic heavy-ion collision experiments in the future.