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28 March 2024
 
  » arxiv » 2210.13026

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Ab-initio study of dibaryons with highest bottom number
M. Padmanath ; Nilmani Mathur ; Debsubhra Chakraborty ;
Date 24 Oct 2022
AbstractWe present the first lattice study of dibaryons with highest bottom number. Utilizing a set of state-of-the-art lattice QCD ensembles and methodologies, we determine the ground state of dibaryon composed of two $Omega_{bbb}$ baryons. We extract the related scattering amplitude in the $^1S_0$ channel and find a sub-threshold pole, which signifies an unambiguous evidence for a deeply bound $Omega_{bbb}-Omega_{bbb}$ dibaryon. The binding energy of such a state as dictated by this pole singularity is found to be -81($^{+14}_{-16}$) MeV. We quantify various systematic uncertainties involved in this determination, including those related to the excited state contamination and Coulomb repulsion between the bottom quarks.
Source arXiv, 2210.13026
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