Searching hidden-sector photons inside a superconducting boxJ. Jaeckel1 and J. Redondo2
1 Institute for Particle Physics Phenomenology, Durham University - Durham DH1 3LE, UK, EU
2 Deutsches Elektronen Synchrotron - Notkestraße 85, 22607 Hamburg, Germany, EU
received 7 July 2008; accepted in final form 1 October 2008; published November 2008
published online 31 October 2008
We propose an experiment to search for extra “hidden-sector" U(1) gauge bosons with small gauge kinetic mixing with the ordinary photon, predicted by many extensions of the Standard Model. The setup consists of a highly sensitive magnetometer inside a superconducting shielding which are in turn placed inside a strong (but sub-critical) magnetic field. Photon hidden-sector photon photon oscillations would allow the magnetic field to “leak” into the shielded volume and register on the magnetometer. In our setup the magnetometer directly measures the field strength (2), improving the sensitivity over “light-shining-through-walls experiments which measure the regeneration probability ( 4). In the mass range 2 eV m 200 meV the projected sensitivity is in the ~ 5 10-9 to ~ 10-6 range. This surpasses current astrophysical and laboratory limits by several orders of magnitude —ample room to discover new physics.
14.70.Pw - Other gauge bosons.
12.20.Fv - Experimental tests.
41.20.Gz - Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems.
© EPLA 2008