Interpretation of MINOS Data in Terms of Non-Standard Neutrino Interactions
Interpretation of MINOS Data in Terms of Non-Standard Neutrino Interactions
复制标题
从非标准中微子相互作用角度解释 MINOS 数据
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
S. Parke
中科院分区：
文献类型：
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作者：
J. Kopp;P. Machado;S. Parke
费米实验室的 MINOS 实验最近报告了中微子和反中微子振荡结果之间的张力。我们证明，这种张力如果持续存在，可以在非标准中微子相互作用（NSI）的框架中得到理解。虽然中性流 NSI（非标准物质效应）不受大气中微子的青睐，但 tau 中微子和核子之间的新带电电流耦合可以在不违反其他约束的情况下拟合 MINOS 数据。特别是，我们表明循环级对味道违规的 {tau} 衰变的贡献被充分抑制。然而，一旦将此处考虑的有效理论嵌入到完整的可重整化模型中，就可能会出现与现有界限的冲突。我们预测了 T2K 和 NO{nu}A 实验对 MINOS 拟合所青睐的 NSI 参数区域的未来敏感性，并表明这两个实验都是测试 MINOS 数据的 NSI 解释的出色工具。
The MINOS experiment at Fermilab has recently reported a tension between the oscillation results for neutrinos and antineutrinos. We show that this tension, if it persists, can be understood in the framework of nonstandard neutrino interactions (NSI). While neutral current NSI (nonstandard matter effects) are disfavored by atmospheric neutrinos, a new charged current coupling between tau neutrinos and nucleons can fit the MINOS data without violating other constraints. In particular, we show that loop-level contributions to flavor-violating {tau} decays are sufficiently suppressed. However, conflicts with existing bounds could arise once the effective theory considered here is embedded into a complete renormalizable model. We predict the future sensitivity of the T2K and NO{nu}A experiments to the NSI parameter region favored by the MINOS fit, and show that both experiments are excellent tools to test the NSI interpretation of the MINOS data.