$H$ dibaryon away from the $SU(3)_f$ symmetric point

TL;DR

This paper reports on ongoing lattice QCD efforts to identify the $H$ dibaryon away from the $SU(3)$ flavor symmetric point, using advanced correlation techniques and finite-volume analysis across multiple ensembles.

Contribution

It introduces the use of the distillation framework with large bi-local two-baryon interpolators to study the $H$ dibaryon spectrum in non-symmetric flavor settings.

Findings

Low-lying spectrum determined on various ensembles.

Finite-volume analysis underway to extract scattering amplitudes.

Multiple moving frames analyzed for spectrum consistency.

Abstract

We present the current status of our efforts in search of $H$ dibaryon on $N_f$=2+1 CLS ensembles away from the $SU(3)$ flavor symmetric point. Utilizing the distillation framework (also known as LapH) in its exact and stochastic forms, we calculate two-point correlation matrices using large bases of bi-local two-baryon interpolators to reliably determine the low-energy spectra. We report the low lying spectrum on several moving frames for multiple ensembles with different lattice spacing and physical volumes. The status of finite-volume analysis to extract the scattering amplitudes is also discussed.