Abstract
Recent theoretical works have shown that matter swapping between two parallel
braneworlds could occur under the influence of magnetic vector potentials. In
our visible world, galactic magnetism possibly produces a huge magnetic
potential. As a consequence, this paper discusses the possibility to observe
neutron disappearance into another braneworld in certain circumstances. The
setup under consideration involves stored ultracold neutrons - in a vessel -
which should exhibit a non zero probability p to disappear into an invisible
brane at each wall collision. An upper limit of p is assessed based on
available experimental results. This value is then used to constrain the
parameters of the theoretical model. Possible improvements of the experiments
are discussed.
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