Sterile-active neutrino oscillations and shortcuts in the extra dimension
Sterile-active neutrino oscillations and shortcuts in the extra dimension
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惰性活跃中微子振荡和额外维度中的捷径
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
T. Weiler
中科院分区：
文献类型：
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作者：
H. Pas;S. Pakvasa;T. Weiler
我们讨论了在具有大额外维的理论中产生的活性惰性中微子振荡中可能出现的一种新的共振。膜的波动有效地增加了活动中微子相对于通过额外维体的惰性中微子的路径长度。远低于共振，适用标准振荡公式。远高于共振，主动无菌振荡被抑制。我们表明，在30-400 MeV范围内的共振能量允许在一致的四中微子模型中解释所有中微子振荡数据，包括LSND数据。在MiniBooNE中，高共振能量意味着信号增强。低共振能量意味着LSND的能谱扭曲，并且在介子停止源中增加了{nu}{sub {mu}}损耗。共振能量的数值可以与膜世界的几何方面联系起来。简述了膜体共振的一些天体物理学和宇宙学结果。
We discuss a possible new resonance in active-sterile neutrino oscillations arising in theories with large extra dimensions. Fluctuations in the brane effectively increase the path-length of active neutrinos relative to the path-length of sterile neutrinos through the extra-dimensional bulk. Well below the resonance, the standard oscillation formulas apply. Well above the resonance, active-sterile oscillations are suppressed. We show that a resonance energy in the range of 30-400 MeV allows an explanation of all neutrino oscillation data, including LSND data, in a consistent four-neutrino model. A high resonance energy implies an enhanced signal in MiniBooNE. A low resonance energy implies a distorted energy spectrum in LSND, and an enhanced {nu}{sub {mu}} depletion from a stopped-pion source. The numerical value of the resonance energy may be related back to the geometric aspects of the brane world. Some astrophysical and cosmological consequences of the brane-bulk resonance are briefly sketched.