Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

Ab-initio study of dibaryons with highest bottom number

Aug 9, 2022, 7:00 PM
Poster Presentation Hadron Spectroscopy and Interactions Poster


Padmanath Madanagopalan (Helmholtz Institut Mainz)


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 ground state of the 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 is 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 $-89(_{-12}^{+16})$ MeV. We quantify various systematic uncertainties involved in this determination, including those related to the Coulomb repulsion between the bottom quarks.

Primary authors

Mr Debsubhra Chakraborty (TIFR Mumbai) Prof. Nilmani Mathur (TIFR Mumbai) Padmanath Madanagopalan (Helmholtz Institut Mainz)

Presentation materials