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19 April 2024

» arxiv » arxiv.0705.2336

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A direct experimental limit on neutron -- mirror neutron oscillations
G. Ban ; T. Lefort ; O. Naviliat-Cuncic ; K. Bodek ; S. Kistryn ; M. Kuzniak ; J. Zejma ; N. Khomutov ; P. Knowles ; M. Rebetez ; A. Weis ; C. Plonka ; G. Rogel ; G. Quemener ; D. Rebreyend ; S. Roccia ; M. Tur ; M. Daum ; R. Henneck ; S. Heule ; M. Kasprzak ; K. Kirch ; A. Knecht ; A. Mtchedlishvili ; G. Zsigmond ;
Date:	16 May 2007
Subject:	Nuclear Experiment (nucl-ex)
Abstract:	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 ${ m n’}$, could potentially mix and undergo ${ m nn’}$ oscillations. The interaction of an ordinary magnetic field with the ordinary neutron would lift the degeneracy between the mirror partners, diminish the ${ m n’}$-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 a limit on the oscillation time $ au_{ m nn’} > 103$ s (95% C.L.) is derived.
Source:	arXiv, arxiv.0705.2336
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