/ Experiment-HEP hep-ex/0105083


Status of the experiment on the laboratory search for the electron anti-neutrino magnetic moment at the level mu(nu) greater than = or equal 3 x 10**-12 mu(B)


Neganov, B.S. (Dubna, JINR) ; Trofimov, V.N. (Dubna, JINR) ; Yukhimchuk, A.A. (RFNC-VNIIEF, Sarov) ; Bogdanova, L.N. (Moscow, ITEP) ; Beda, A.G. (Moscow, ITEP) ; Starostin, A.S (Moscow, ITEP)

Published in: Phys.Atom.Nucl. / Yad.Fiz.
Year: 2001 / 2001
Vol.: 64 / 64
Page No: 1948-1954 / 2033-2039
Pages: 8

Abstract: The experiment on the direct detection of antineutrino-electron scattering with an artificial tritium source allows to lower the present-day laboratory limit for the neutrino magnetic moment by two orders of magnitude. The experiment brings together novel unique technologies in studies of rare processes of neutrino-electron scattering: an artificial source of antineutrinos from tritium decay of 40 MCi activity with the antineutrino flux density ~6 10^{14}cm^{-2} s^{-1}: new types of detectors capable of detecting electrons with energy down to ~10 eV, namely, a silicon cryogenic detector based on the ionization-into-heat conversion effect, a high purity germanium detector with the internal amplification of a signal in the electric field. A compact installation located in a specially equipped laboratory underground <100 m w.e.) will provide favorable background conditions for running the experiment. With the background level about 0.1 events/kg keV day and detector assembly masses 3kg and 5kg for the silicon and germanium ones, respectively, the limit for the electron antineutrino magnetic moment mu_nu < 3 10^{-12}mu_B will be obtained during 1-2 years of data acquisition. Status of the experiment and state-of-the-art are presented.

Web-Page: http://www.adsabs.harvard.edu/abs/2001PAN....64.1948N; http://alice.cern.ch/format/showfull?sysnb=2256693; http://link.aip.org/link/?atn/64/1948

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