Preprint

PUBDB-2026-00825

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preliminary study of the $H$ dibaryon in $N_f = 2 + 1$ lattice QCD

Raposo, A. B. ; Bulava, J. ; Green, J. R.DESY* ; Hanlon, A. D. ; Laudicina, D. (Corresponding author) ; Lazarow, M. ; Morningstar, C. ; Nicholson, A. ; Romero-López, F. ; Salg, M. ; Walker-Loud, A. ; Wittig, H.

2026

This record in other databases:

Report No.: DESY-26-028; arXiv:2603.00698

Abstract: We present preliminary results on the $I=0$, $S=-2$ $H$ dibaryon in $N_{\rm f}=2+1$ QCD. The calculation is performed with heavier-than-physical quarks ($m_π\approx 280$ MeV) on a single CLS ensemble. Correlation matrices are constructed using the distillation technique and the three relevant channels, $ΛΛ$, $NΞ$, $ΣΣ$, are investigated to determine the interacting spectrum relevant for $S$-wave across multiple momentum frames. The scattering amplitude is determined by solving the corresponding two-body quantization condition. These preliminary results are part of the ongoing efforts to determine the properties of di-hyperons and to establish whether the $H$ dibaryon exists down to physical quark masses.

Note: 10 pages, 3 figures, Talk presented at the 42nd International Symposium on Lattice Field Theory (LATTICE2025), 2-8 November 2025, Tata Institute of Fundamental Research, Mumbai, India

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Contributing Institute(s):

1. Zeuthen Particle PhysicsTheory (Z_ZPPT)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2026

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Database coverage:
Published

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