Magnetic anomaly in UCN trapping: signal for neutron oscillations to parallel world? |
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Authors: | Zurab Berezhiani Fabrizio Nesti |
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Institution: | 1.Dipartimento di Fisica,Università dell’Aquila,Coppito,Italy;2.INFN,Laboratori Nazionali Gran Sasso,Assergi,Italy |
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Abstract: | Present experiments do not exclude that the neutron n oscillates, with an appreciable probability, into its invisible degenerate twin from a parallel world, the so-called mirror
neutron n′. These oscillations were searched experimentally by monitoring the neutron losses in ultra-cold neutron traps, where they
can be revealed by the magnetic field dependence of n–n′ transition probability. In this work we reanalyze the experimental data acquired by the group of A.P. Serebrov at Institute
Laue–Langevin, and find a dependence at more than 5σ away from the null hypothesis. This anomaly can be interpreted as oscillation of neutrons to mirror neutrons with a timescale
of few seconds, in the presence of a mirror magnetic field order 0.1 G at the Earth. This result, if confirmed by future experiments,
will have deepest consequences for fundamental particle physics, astrophysics and cosmology. |
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