More about neutron - mirror neutron oscillation
Zurab Berezhiani

TL;DR
This paper investigates neutron to mirror neutron oscillations, showing how magnetic fields influence the process and analyzing recent experimental data suggesting possible rapid oscillations and the presence of a mirror magnetic field.
Contribution
It provides a detailed calculation of $n-n'$ oscillation probabilities considering non-zero mirror magnetic fields and interprets experimental hints of neutron loss sensitivity to magnetic field orientation.
Findings
Oscillation probability can be suppressed or enhanced by magnetic fields.
Recent data suggest neutron losses depend on magnetic field orientation.
Possible evidence for a mirror magnetic field of about 0.1 G.
Abstract
It was pointed out recently that oscillation of the neutron into mirror neutron , a sterile twin of the neutron with exactly the same mass, could be a very fast process with the the baryon number violation, even faster than the neutron decay itself. This process is sensitive to the magnetic fields and it could be observed by comparing the neutron lose rates in the UCN storage chambers for different magnetic backgrounds. We calculate the probability of oscillation in the case when a mirror magnetic field is non-zero and show that in this case it can be suppressed or resonantly enhanced by applying the ordinary magnetic field , depending on its strength and on its orientation with respect to . The recent experimental data, under this hypothesis, still allow the oscillation time order 1 s or even smaller. Moreover, they indicate that the…
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