Speaker
Description
Mirror matter was initially proposed as a possible fix of parity violation in the weak interaction on a global scale[1]. More in general, mirror matter and mirror neutrons in particular could help explain baryon number violation and are viable candidates for dark matter[2].
The mirror-neutron experiment at PSI was a storage measurement, designed to search for anomalous disappearances of ultracold neutrons in the presence of a controlled non-zero magnetic field[3]. The experiment completed operation 2021 and tested a mirror magnetic field from about 5 $\mu$T to above 10 $\mu$T, finding no evidence for anomalous neutron losses. We provide an in-depth look at the analysis based on Monte Carlo simulations and precise magnetic field maps and present new limits on the oscillation time.
[1] Lee, T.D.; Yang, C.-N., Phys. Rev. 1956, 104, 254–258.
[2] Bento, L.; Berezhiani, Fortsch. Phys. 2002, 50, 489–495.
[3] Ayres N J et al., Symmetry. 2022; 14(3): 503
