2 papers
hep-lat2026
On the equivalence of left-hand-cut and three-body formalisms
André Baião-Raposo, Raul Briceño, Sebastian M. Dawid
The "left-hand cut problem" in lattice QCD arises when exchange singularities invalidate standard relations used to extract scattering amplitudes from the finite-volume spectrum. I…
hep-lat2026
Analytic decomposition of two-body electroweak processes with left-hand cuts
André Baião-Raposo, Raúl A. Briceño, Nicolas Lang +2
We derive an on-shell representation for electroweak transition amplitudes involving two hadrons in both the initial and final state for systems where there are left-hand…