We revisit the description of femtoscopic correlation functions beyond the asymptotic wave-function approximation, quantifying corrections arising from the short-distance structure of the interaction potential and the finite size of the particle-emitting source. We further extend the formalism by cosistently incorporating Coulomb interactions at the short distances relevant for femtoscopy...
In this exploratory work we analyze the possible existence of a strangeness $S=-3$, isospin $I=1$ pentaquark state $P_{sss}$ generated dynamically from the $\bar{K}\Xi$ interaction. We employ a unitarized scheme in coupled channels based on the chiral Lagrangian expanded up to next-to-leading order (NLO), and show that the inclusion of the NLO terms can be crucial to provide the necessary...
