Search for Massive Neutrinos in the Decay $\pi \to e \nu$

Search for Massive Neutrinos in the Decay $\pi \to e \nu$
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在衰变 $pi o e u$ 中搜索大量中微子

DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
Minoru Yoshida
Minoru Yoshida
中科院分区:
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文献类型:
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作者:
M. Aoki;M. Ding;L. Kurchaninov;T. Numao;Y. Igarashi;Shaomin Chen;C. Malbrunot;M. Blecher;T. Sullivan;D. Vavilov;L. Doria;D. Bryman;A. Sher;A. Hussein;K. Yamada;N. Ito;P. Gumplinger;S. Kettell;C. Hurst;R. Poutissou;L. Littenberg;Minoru Yoshida

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在pi-->e-nu衰变谱中寻找了大质量中微子的证据,背景pi-->u-->e衰减链被高度抑制。上限(90%C.L.)中微子质量区60-129 MeV/c^2的中微子混合矩阵元素|U_EI|^2被设置为10^-8的水平。
Evidence of massive neutrinos in the pi -->e nu decay spectrum was sought with the background pi -->mu -->e decay chain highly suppressed. Upper limits (90% C.L.) on the neutrino mixing matrix element |U_ei|^2 in the neutrino mass region 60--129 MeV/c^2 were set at the level of 10^-8.