title: Scattering in mixed dimensions with ultracold gases.
abstract: We experimentally investigate the mix-dimensional scattering occurring when the collisional partners live in different dimensions. We employ a binary mixture of ultracold atoms and exploit a species-selective 1D optical lattice to confine only one atomic species in 2D. By applying an external magnetic field in proximity of a Feshbach resonance, we adjust the free-space scattering length to observe a series of resonances in mixed dimensions. By monitoring 3-body inelastic losses, we measure the magnetic field values corresponding to the mix-dimensional scattering resonances and find a good agreement with the theoretical predictions based on simple energy considerations.
authors.affiliation: European Laboratory for Nonlinear Spectroscopy and Dipartimento di Fisica, Università di Firenze, via Nello Carrara 1, I-50019 Sesto Fiorentino, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Lamporesi
authors.forename: J
authors.initials: J
authors.lastname: Catani
authors.forename: G
authors.initials: G
authors.lastname: Barontini
authors.forename: Y
authors.initials: Y
authors.lastname: Nishida
authors.forename: M
authors.initials: M
authors.lastname: Inguscio
authors.forename: F
authors.initials: F
authors.lastname: Minardi