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A Direct Experimental Limit on Neutron -- Mirror Neutron Oscillations by Ban, G.; Bodek, K.; Daum, M.; Henneck, R.; Heule, S.; Kasprzak, M.; Khomutov, N.; Kirch, K.; Kistryn, S.; Knecht, A.; Knowles, P.; Kuzniak, M.; Lefort, T.; Mtchedlishvili, A.; Naviliat-Cuncic, O.; Plonka, C.; Quemener, G.; Rebetez, M.; Rebreyend, D.; Roccia, S.; Rogel, G.; Tur, M.; Weis, A.; Zejma, J.; Zsigmond, G. is a scholarly article available to read on EtoBox.

What is A Direct Experimental Limit on Neutron -- Mirror Neutron Oscillations about?

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 ${\rm n'}$, could potentially mix and undergo ${\rm nn'}$ oscillations. The interaction of an ordinary magnetic field with the ordinary neutron would lift the degeneracy between the mirror partners, diminish the ${\rm n'}$-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 field. No influence of the magnetic field is found and, assuming negligible mirror magnetic fields, a limit on the oscillation time $\tau_{\rm nn'} > 103$ s (95% C.L.) is derived.

Author

Ban, G.; Bodek, K.; Daum, M.; Henneck, R.; Heule, S.; Kasprzak, M.; Khomutov, N.; Kirch, K.; Kistryn, S.; Knecht, A.; Knowles, P.; Kuzniak, M.; Lefort, T.; Mtchedlishvili, A.; Naviliat-Cuncic, O.; Plonka, C.; Quemener, G.; Rebetez, M.; Rebreyend, D.; Roccia, S.; Rogel, G.; Tur, M.; Weis, A.; Zejma, J.; Zsigmond, G.

Published

2007

Language

EN