Speaker
Description
We consider kaon-deuteron femtoscopy correlation functions using elementary kaon–nucleon scattering amplitudes within unitarized chiral effective field theory. The amplitudes are obtained through the impulse approximation, accounting for single kaon–nucleon scatterings, and through the fixed-center approximation to the Faddeev equations, which includes multiple re-scattering effects. The resulting correlation functions are highly sensitive to source size and relative momentum, showing strong deviations from the Coulomb baseline driven by the presence of the $\Lambda (1405)$ resonance below threshold and inelastic channels. Our calculations agree well with ALICE data, demonstrating the potential of femtoscopy in probing strange hadronic interactions.
https://arxiv.org/abs/2507.22593