Probing neutrino magnetic moments at the Spallation Neutron Source facility
Probing neutrino magnetic moments at the Spallation Neutron Source facility
复制标题
在散裂中子源设施中探测中微子磁矩
DOI：
10.1103/physrevd.92.013011
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发表时间：
2015
影响因子：
5
通讯作者：
J. Valle
中科院分区：
文献类型：
--
作者：
T. Kosmas;O. Miranda;D. Papoulias;M. Tórtola;J. Valle
利用中性流相干中微子-核散射研究了Majorana中微子的电磁性质。我们专注于最近计划的相干实验的潜力，在Sputterus中子源探测μ子中微子磁矩。在准粒子无规相近似的背景下，采用真实的核结构计算，在卡方分析的基础上确定了由此产生的灵敏度。我们发现，他们可以改善现有的限制了半个数量级。此外，我们表明，这些设施允许在低能量区的标准模型精度测试，与竞争力的弱混合角的测定。最后，它们还提供了探测其他电磁中微子性质的能力，例如中微子电荷半径。我们说明了我们的实验装置和目标材料的各种选择的结果。
Majorana neutrino electromagnetic properties are studied through neutral current coherent neutrino-nucleus scattering. We focus on the potential of the recently planned COHERENT experiment at the Spallation Neutron Source to probe muon-neutrino magnetic moments. The resulting sensitivities are determined on the basis of a chi^2 analysis employing realistic nuclear structure calculations in the context of the quasi-particle random phase approximation. We find that they can improve existing limits by half an order of magnitude. In addition, we show that these facilities allow for Standard Model precision tests in the low energy regime, with a competitive determination of the weak mixing angle. Finally, they also offer the capability to probe other electromagnetic neutrino properties, such as the neutrino charge-radius. We illustrate our results for various choices of experimental setup and target material.