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Search for macroscopic CP violating forces using a neutron EDM spectrometer.(Report)

Serebrov, A. P. ; Zimmer, O. ; Geltenbort, P. ; Fomin, A. K. ; Ivanov, S. N. ; Kolomensky, E. A. ; Krasnoshekova, I. A. ; Lasakov, M. S. ; Lobashev, V. M. ; Pirozhkov, A. N. ; Varlamov, V. E. ; Vasiliev, A. V. ; Zherebtsov, O. M. ; Aleksandrov, E. B. ; Dmitriev, S. P. ; Dovator, N. A.

JETP Letters, Jan, 2010, Vol.90(9), p.6(5) [Periódico revisado por pares]

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  • Título:
    Search for macroscopic CP violating forces using a neutron EDM spectrometer.(Report)
  • Autor: Serebrov, A. P. ; Zimmer, O. ; Geltenbort, P. ; Fomin, A. K. ; Ivanov, S. N. ; Kolomensky, E. A. ; Krasnoshekova, I. A. ; Lasakov, M. S. ; Lobashev, V. M. ; Pirozhkov, A. N. ; Varlamov, V. E. ; Vasiliev, A. V. ; Zherebtsov, O. M. ; Aleksandrov, E. B. ; Dmitriev, S. P. ; Dovator, N. A.
  • É parte de: JETP Letters, Jan, 2010, Vol.90(9), p.6(5)
  • Descrição: Byline: A. P. Serebrov (1), O. Zimmer (2), P. Geltenbort (2), A. K. Fomin (1), S. N. Ivanov (1), E. A. Kolomensky (1), I. A. Krasnoshekova (1), M. S. Lasakov (1), V. M. Lobashev (1), A. N. Pirozhkov (1), V. E. Varlamov (1), A. V. Vasiliev (1), O. M. Zherebtsov (1), E. B. Aleksandrov (3), S. P. Dmitriev (3), N. A. Dovator (3) Abstract: The search for CP violating forces between nucleons in the so-called axion window of force ranges [lambda] between 2 x 10.sup.-5 m and 0.02 m is interesting because only little experimental information is available there. Axionlike particles would induce a pseudo-magnetic field for neutrons close to bulk matter. A laboratory search investigates neutron spin precession close to a heavy mirror using ultracold neutrons in a magnetic resonance spectrometer. From the absence of a shift of the magnetic resonance we established new constraints on the coupling strength of axion-like particles in terms of the product g .sub.s g .sub.p of scalar and pseudo-scalar dimensionless constants, as a function of the force range [lambda], g .sub.s g .sub.p[lambda].sup.2 a$? 2 x 10.sup.-21 [cm.sup.2] (C.L.95%) for 10.sup.-4 cm < [lambda] < 1 cm. For 0.1 cm < [lambda] < 1 cm previous limits are improved by 4 to 5 orders of magnitude. Author Affiliation: (1) Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina, Leningrad region, 188300, Russia (2) Institut Laue Langevin, BP 156, 38042, Grenoble, France (3) Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russia Article History: Registration Date: 12/03/2010 Received Date: 08/12/2009 Online Date: 16/03/2010 Article note: The article is published in the original.
  • Idioma: English

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