Do magnetic fields prevent mirror particles from entering the galactic disk?
R. Foot
TL;DR
Magnetic fields alone do not prevent mirror particles from entering the galactic disk because mirror particle self-interactions randomize their directions, allowing them to be consistent with dark matter detection experiments.
Contribution
The paper demonstrates that mirror particle self-interactions negate magnetic field effects, challenging previous assumptions about their exclusion from the galactic disk.
Findings
Mirror particle self-interactions randomize particle directions.
Mirror particles can enter the galactic disk despite magnetic fields.
Mirror dark matter remains compatible with detection experiments.
Abstract
Recently it has been suggested that magnetic fields prevent mirror particles from entering the galactic disk, thereby disfavoring the mirror dark matter explanation of the dark matter direct detection experiments. We show that mirror particle self interactions will typically randomize the directions of mirror particles on length scales much shorter than their gyroradius. This means that mirror particles are free to enter the galactic disk and consequently mirror dark matter remains consistent with all experiments and observations.
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