Multi-particle correlations and short-distance particle production

by Hans-Werner Hammer (Darmstadt)

Tuesday 10 Feb 2026, 15:15 → 17:15 Europe/Berlin

Nußallee 14-16/0.023 (HISKP) - Lecture Hall (HISKP)

We discuss multi-particle correlations in quantum systems close to the
unitary limit of infinite scattering length. In halo nuclei, such
correlations between neutrons can be measured by removing the core in
hard knock-out reactions and measuring the neutron relative energy
distributions in the final state. These distributions are largely
determined by the multi-neutron final state interactions. At low energies,
they can be strongly constrained by a non-relativistic conformal symmetry
that becomes exact in the unitary limit. The multi-neutron system then
behaves as a non-relativistic analog of Georgi's unparticle.
Similar behavior can be observed in the short-distance production of hadrons
with large scattering length. We explicitly discuss the case of neutral
D mesons and comment on the case of B mesons.