Hadron Spectroscopy with lattice QCD: challenges and opportunities
arxiv(2024)
摘要
Ongoing challenges in computing the spectrum of hadronic resonances and
shallow bound-states from lattice QCD are reviewed. Since such states are
identified as poles in the scattering matrix, nearby non-analyticities must be
treated to analytically continue to complex center-of-mass energies.
Significant lattice spacing effects have also been observed in some channels,
necessitating a continuum limit. Recent achievements are also highlighted,
including lattice investigations of states in the charm region, baryon-baryon
scattering, and the first coupled channel meson-baryon amplitude in the
Λ(1405) channel.
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