skip to main content

Experimental search for neutron - mirror neutron oscillations using storage of ultracold neutrons

Serebrov, A. P. ; Aleksandrov, E. B. ; Dovator, N. A. ; Dmitriev, S. P. ; Fomin, A. K. ; Geltenbort, P. ; Kharitonov, A. G. ; Krasnoschekova, I. A. ; Lasakov, M. S. ; Murashkin, A. N. ; Shmelev, G. E. ; Varlamov, V. E. ; Vassiljev, A. V. ; Zherebtsov, O. M. ; Zimmer, O.

Phys.Lett.B663:181-185,2008 [Periódico revisado por pares]

Texto completo disponível

Citações Citado por
  • Título:
    Experimental search for neutron - mirror neutron oscillations using storage of ultracold neutrons
  • Autor: Serebrov, A. P. ; Aleksandrov, E. B. ; Dovator, N. A. ; Dmitriev, S. P. ; Fomin, A. K. ; Geltenbort, P. ; Kharitonov, A. G. ; Krasnoschekova, I. A. ; Lasakov, M. S. ; Murashkin, A. N. ; Shmelev, G. E. ; Varlamov, V. E. ; Vassiljev, A. V. ; Zherebtsov, O. M. ; Zimmer, O.
  • Assuntos: Nuclear Experiment
  • É parte de: Phys.Lett.B663:181-185,2008
  • Descrição: The idea of a hidden sector of mirror partners of elementary particles has attracted considerable interest as a possible candidate for dark matter. Recently it was pointed out by Berezhiani and Bento that the present experimental data cannot exclude the possibility of a rapid oscillation of the neutron n to a mirror neutron n' with oscillation time much smaller than the neutron lifetime. A dedicated search for vacuum transitions n->n' has to be performed at weak magnetic field, where both states are degenerate. We report the result of our experiment, which compares rates of ultracold neutrons after storage at a weak magnetic field well below 20 nT and at a magnetic field strong enough to suppress the seeked transitions. We obtain a new limit for the oscillation time of n-n' transitions, tau_osc (90% C.L.) > 414 s. The corresponding limit for the mixing energy of the normal and mirror neutron states is delta_m (90% C.L.) < 1.5x10-18 eV. Comment: 16 pages, 8 figures, 2 tables

Buscando em bases de dados remotas. Favor aguardar.