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arXiv 0705.4576hep-ex
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GEMMA实验中中微子磁矩测量的首次结果

The first result of the neutrino magnetic moment measurement in the GEMMA experiment

A. G. Beda, V. B. Brudanin, E. V. Demidova, V. G. Egorov, M. G. Gavrilov, M. V. Shirchenko, A. S. Starostin, Ts. Vylov

摘要:

本文介绍了用GEMMA谱仪在加里宁斯克核电站进行中微子磁矩测量的第一个结果。研究了反中微子电子散射。光谱仪中使用了1.5 kg的高纯锗探测器,放置在距离3 GW反应堆堆芯13.9 m处。反中微子通量是$2.73\times 10^{13} ν_e / cm^2 / s$。利用微分法提取了$ν$ -e电磁散射事件。在6200和2064小时的反应堆ON和OFF期间的散射电子光谱进行了比较。通过对实验数据的处理,导出了中微子磁矩$μ_ν< 5.8\times 10^{-11}$玻尔磁子在90{%} CL处的上限。

英文摘要:

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 $2.73\times 10^{13} ν_e / cm^2 / s$. 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 $μ_ν< 5.8\times 10^{-11}$ Bohr magnetons at 90{%} CL is derived from the data processing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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