Production of $\Omega NN$ and $\Omega \Omega N$ in ultra-relativistic heavy ion collisions

Abstract

Even though lots of $\Lambda$-hypernuclei have been found and measured, multi-strangeness hypernuclei consisting of $\Omega$ are not yet discovered. The studies of multi-strangeness hypernuclei help us further understand the interaction between hyperons and nucleons. Recently the $\Omega N$ and $\Omega \Omega$ interactions as well as binding energies were calculated by the HAL-QCD's lattice Quantum Chromo-Dynamics (LQCD) simulations and production rates of $\Omega$-dibaryon in Au + Au collisions at RHIC and Pb + Pb collisions at LHC energies were estimated by a coalescence model. The present work discusses the production of more exotic triple-baryons including $\Omega$, namely $\Omega NN$ and $\Omega \Omega N$ as well as their decay channels. A variation method is used in calculations of bound states and binding energy of $\Omega NN$ and $\Omega \Omega N$ with the potentials from the HAL-QCD's results. The productions of $\Omega NN$ and $\Omega \Omega N$ are predicted by using a blast-wave model plus coalescence model in ultra-relativistic heavy-ion collisions at $\sqrt{s_{NN}}=200$ GeV and $2.76$ TeV. Furthermore, plots for baryon number dependent yields of different baryons ($N$ and $\Omega$), their dibaryons and hypernuclei are made and the production rate of a more exotic tetra-baryon ($\Omega \Omega NN$) is extrapolated.

arXiv comment10 pages, 5 figures, 7 tables

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Cited by in corpus (11)

• Production of exotic hadrons in $pp$ and nuclear collisions
• On a possible ${}_{\varphi }^3$H hypernucleus with HAL QCD interaction
• Examination of the $\varphi -NN$ bound-state problem with lattice QCD $N-\varphi$ potentials
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• Study of light $\varphi$-mesic nuclei with HAL QCD $\varphi N$ interactions
• Femtoscopic study of the $\Omega \alpha$ interaction in heavy-ion collisions
• Reveal short range interactions between $u/d$ quarks in the $NN$, $D_{03}$, and $D_{30}$ systems
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• Production characteristics of light nuclei, hypertritons and $\Omega$-hypernuclei in Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV
• Bound States of $\Omega$ Baryons in Light Nuclei