| A direct experimental limit on neutron - mirror neutron oscillations (2009) | |||||||||||
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Abstract | |||||||||||
| In case a mirror world with a copy of our ordinary particle spectrum would exist, the neutron n and its degenerate partner, the mirror neutron n0, could potentially mix and undergo nn0 oscillations. The interaction of an ordinary magnetic eld with the ordinary neutron would lift the degeneracy between the mirror partners, diminish the n0-amplitude in the n-wavefunction and, thus, suppress its observability. We report an experimental comparison of ultracold neutron storage in a trap with and without superimposed magnetic eld. No in uence of the magnetic eld is found and a limit on the oscillation time nn0 > 103 s (95% C.L.) is derived. | |||||||||||
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