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arXiv · 2210.13026

Ab-initio study of dibaryons with highest bottom number

M. Padmanath·Nilmani Mathur·Debsubhra Chakraborty
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Abstract

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.

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M. Padmanath, Nilmani Mathur, Debsubhra Chakraborty. 2022-10-24. Ab-initio study of dibaryons with highest bottom number. https://arxiv.org/abs/2210.13026

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