Additional results from the first dedicated search for neutron-mirror neutron oscillations

K. Bodek, St Kistryn, M. Kuźniak, J. Zejma, M. Burghoff, S. Knappe-Grüneberg, T. Sander-Thoemmes, A. Schnabel, L. Trahms, G. Ban, T. Lefort, O. Naviliat-Cuncic, N. Khomutov, P. Knowles, A. S. Pazgalev, A. Weis, G. Rogel, G. Quéméner, D. Rebreyend, S. RocciaG. Bison, N. Severijns, K. Eberhardt, G. Hampel, W. Heil, J. V. Kratz, T. Lauer, C. Plonka-Spehr, Yu Sobolev, N. Wiehl, I. Altarev, P. Fierlinger, E. Gutsmiedl, S. Paul, R. Stoepler, M. Daum, R. Henneck, K. Kirch, A. Knecht, B. Lauss, A. Mtchedlishvili, G. Petzoldt, G. Zsigmond

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20 Scopus citations


The existence of a mirror world holding a copy of our ordinary particle spectrum could lead to oscillations between the neutron (n) and its mirror partner (n). Such oscillations could manifest themselves in storage experiments with ultracold neutrons whose storage lifetime would depend on the applied magnetic field. Here, extended details and measurements from the first dedicated experimental search for nn oscillations published in [G. Ban, K. Bodek, M. Daum, R. Henneck, S. Heule, M. Kasprzak, N. Khomutov, K. Kirch, S. Kistryn, A. Knecht, P. Knowles, M. Kuźniak, T. Lefort, A. Mtchedlishvili, O. Naviliat-Cuncic, C. Plonka, G. Quéméner, M. Rebetez, D. Rebreyend, S. Roccia, G. Rogel, M. Tur, A. Weis, J. Zejma, G. Zsigmond, Direct experimental limit on neutron mirror-neutron oscillations, Phys. Rev. Lett. 99 (2007) 161603] will be presented, focussing on a possible dependence of the UCN counts on the magnetic field and its direction. However, at present no significant change in the averaged UCN counts with respect to the applied magnetic field has been found.

Original languageEnglish
Pages (from-to)141-143
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
StatePublished - 1 Dec 2009


  • Mirror neutrons
  • Neutron oscillations
  • Ultracold neutrons


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