Signs of hypothetical light gauge bosons from a hidden sector may appear in
Aharonov-Bohm-like experiments. The absence of signal in carried on experiments
allow us to set a modest constraint to the mass and coupling constant of these
particles. Our findings open the possibility to exploit the leaking of hidden
magnetic field in a different setup of experiments.Comment: Contributed to the 9th Patras Workshop on Axions, WIMPs and WISPs,
Mainz, June 24-28, 201
