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Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station
- Source :
- Physical Review D. 75
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
Abstract
- 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 $\cpd$ 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 $\rm{6.4 \times 10^{12} cm^{-2} s^{-1}}$, the limit on the neutrino magnetic moments of $\rm{\munuebar < 7.4 \times 10^{-11} \mub}$ at 90% confidence level was derived. Indirect bounds on the $\nuebar$ radiative decay lifetimes were inferred.<br />16 pages, 15 figures, 9 tables
- Subjects :
- Physics
Nuclear and High Energy Physics
Particle physics
Magnetic moment
Physics::Instrumentation and Detectors
Detection threshold
Astrophysics::High Energy Astrophysical Phenomena
Radiative decay
FOS: Physical sciences
High Energy Physics - Experiment
Semiconductor detector
Background level
High Energy Physics - Experiment (hep-ex)
Near threshold
High Energy Physics::Experiment
Reactor neutrino
Neutrino
Atomic physics
Subjects
Details
- ISSN :
- 15502368 and 15507998
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi.dedup.....1a00a7441926160ccba314b90ddae6c3
- Full Text :
- https://doi.org/10.1103/physrevd.75.012001