We 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.
Ab-initio study of dibaryons with highest bottom number
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Pre-published on:
April 03, 2023
Published on:
April 06, 2023
Abstract
DOI: https://doi.org/10.22323/1.430.0264
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.