Status of the experiment on the measurement of the neutrino magnetic moment with the spectrometer GEMMA

Beda, A. G.; Brudanin, V.; Demidova, É. V.; Egorov, V.; Gavrilov, M. G.; Kornoukhov, V. N.; Старостин, А. С.; Vylov, C.

doi:10.1134/1.1825510

Cited by 11 publications

(13 citation statements)

References 4 publications

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“…where N e =4.0×10 26 is the number of electrons in the fiducial volume of the germanium detector and the neutrino flux Φ ν is given by (17). At low recoil energy one must take into account the atomic electron binding effects [25].…”

Section: The Data Processingmentioning

confidence: 99%

THE NEW RESULT OF THE NEUTRINO MAGNETIC MOMENT MEASUREMENT IN THE GEMMA EXPERIMENT

Beda

Brudanin

Demidova

et al. 2009

Particle Physics on the Eve of LHC

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The first result of the neutrino magnetic moment measurement at the Kalininskaya Nuclear Power Plant (KNPP) with the GEMMA spectrometer is presented. An antineutrino-electron scattering is investigated. A high-purity germanium detector of 1.5 kg placed 13.9 m away from the 3 GW reactor core is used in the spectrometer. The antineutrino flux is 2.73×10 13ν e /cm 2 /s. The differential method is used to extract the ν-e electromagnetic scattering events. The scattered electron spectra taken in 6200 and 2064 hours for the reactor on and off periods are compared. The upper limit for the neutrino magnetic moment µ ν <5.8×10 −11 µ B at 90% CL is derived from the data processing.

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Section: The Data Processingmentioning

confidence: 99%

THE NEW RESULT OF THE NEUTRINO MAGNETIC MOMENT MEASUREMENT IN THE GEMMA EXPERIMENT

Beda

Brudanin

Demidova

et al. 2009

Particle Physics on the Eve of LHC

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“…In this paper, the results of the 3-year NMM measurement by the collaboration of ITEP (Moscow) and JINR (Dubna) are presented. The measurements are carried out with the GEMMA spectrometer [14,17,18] at the 3 GW th reactor of the Kalinin Nuclear Power Plant (KNPP).…”

Section: Introductionmentioning

confidence: 99%

Gemma experiment: Three years of the search for the neutrino magnetic moment

Beda

Brudanin

Egorov

et al. 2010

Phys. Part. Nuclei Lett.

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The result of the 3-year neutrino magnetic moment measurement at the Kalinin Nuclear Power Plant (KNPP) with the GEMMA spectrometer is presented. Antineutrino-electron scattering is investigated. A high-purity germanium detector of 1.5 kg placed at a distance of 13.9 m from the 3 GW th reactor core is used in the spectrometer. The antineutrino flux is 2.7×10 13ν e/cm 2 /s. The differential method is used to extract ν-e electromagnetic scattering events. The scattered electron spectra taken in 5184+6798 and 1853+1021 hours for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic moment µν <3.2×10 −11 µB at 90% CL is derived from the data processing.

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“…The atomic energy level effects [40], however, limit the potential sensitivity improvement as the threshold is reduced below the typical atomic scale of ∼1 keV. There is an on-going experiment GEMMA [43] and a proposal MAMONT [44] pursuing along these directions. However, this approach cannot improve on the µ ν sensitivities indefinitely.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Wong¹,

Li²,

Lin³

et al. 2007

Phys. Rev. D

171

108

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A search of neutrino magnetic moments was carried out at the Kuo-Sheng Nuclear Power Station at a distance of 28 m from the 2.9 GW reactor core. With a high purity germanium detector of mass 1.06 kg surrounded by scintillating NaI(Tl) and CsI(Tl) crystals as anti-Compton detectors, a detection threshold of 5 keV and a background level of 1 kg −1 keV −1 day −1 near threshold were achieved. Details of the reactor neutrino source, experimental hardware, background understanding and analysis methods are presented. Based on 570.7 and 127.8 days of Reactor ON and OFF data, respectively, at an average Reactor ON electron anti-neutrino flux of 6.4 × 10 12 cm −2 s −1 , the limit on the neutrino magnetic moments of µν e < 7.4 × 10 −11 µB at 90% confidence level was derived. Indirect bounds on theνe radiative decay lifetimes were inferred.

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Status of the experiment on the measurement of the neutrino magnetic moment with the spectrometer GEMMA

Cited by 11 publications

References 4 publications

THE NEW RESULT OF THE NEUTRINO MAGNETIC MOMENT MEASUREMENT IN THE GEMMA EXPERIMENT

THE NEW RESULT OF THE NEUTRINO MAGNETIC MOMENT MEASUREMENT IN THE GEMMA EXPERIMENT

Gemma experiment: Three years of the search for the neutrino magnetic moment

Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

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