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First beta-nu correlation measurement from the recoil-energy spectrum of Penning trapped Ar-35 ions

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    0486384 - ÚJF 2018 RIV US eng J - Journal Article
    Van Gorp, S. - Breitenfeldt, M. - Tandecki, M. - Beck, M. - Finlay, P. - Friedag, P. - Gluck, F. - Herlert, A. - Kozlov, V. - Porobic, T. - Soti, G. - Traykov, E. - Wauters, F. - Weinheimer, Ch. - Zákoucký, Dalibor - Severijns, N.
    First beta-nu correlation measurement from the recoil-energy spectrum of Penning trapped Ar-35 ions.
    Physical Review C. Roč. 90, č. 2 (2014), č. článku 025502. ISSN 2469-9985
    R&D Projects: GA MŠk LA08015; GA MŠk(CZ) LG13031
    Institutional support: RVO:61389005
    Keywords : correlation measurements * spectrometers * ISOLDE
    Subject RIV: BF - Elementary Particles and High Energy Physics
    OBOR OECD: Particles and field physics
    Impact factor: 3.733, year: 2014

    We demonstrate a novel method to search for physics beyond the standard model by determining the beta-nu angular correlation from the recoil-ion energy distribution after beta decay of ions stored in a Penning trap. This recoil-ion energy distribution is measured with a retardation spectrometer. The unique combination of the spectrometer with a Penning trap provides a number of advantages, e.g., a high recoil-ion count rate and low sensitivity to the initial position and velocity distribution of the ions and completely different sources of systematic errors compared to other state-of-the-art experiments. Results of a first measurement with the isotope Ar-35 are presented. Although currently at limited precision, we show that a statistical precision of about 0.5% is achievable with this unique method, thereby opening up the possibility of contributing to state-of-the-art searches for exotic currents in weak interactions.
    Permanent Link: http://hdl.handle.net/11104/0281212
     
Number of the records: 1