Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements

Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements
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推论发现中微子味道演化模型与基于地球的太阳中微子测量之间的一致性

DOI:
10.1103/physrevd.107.023013
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Wong, Sherry
Wong, Sherry
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Laber-Smith, Caroline;Ahmetaj, A. A.;Armstrong, Eve;Balantekin, A. Baha;Patwardhan, Amol V.;Sanchez, M. Margarette;Wong, Sherry

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我们继续研究统计数据同化,一种推理方法,以推断中微子风味演变的解决方案,首次使用真实而不是模拟数据。该模型表示中微子从太阳中心流出,由于电子数密度呈径向变化,在风味空间中经历了米赫耶夫-斯米尔诺夫-沃尔芬斯坦共振。模型中微子能量的选择与萨德伯里中微子天文台和Borexino实验中的实验箱相对应,这些实验箱用于测量电子味在地球上的生存概率。如果Mikheyev-Smirnov-Wolfenstein共振(即太阳电子引起的风味演化)包含在代表模型的动力学方程中,则该过程成功地发现了观测到的通量与模型之间的一致性。
We continue examining statistical data assimilation, an inference methodology, to infer solutions to neutrino flavor evolution, for the first time using real—rather than simulated—data. The model represents neutrinos streaming from the Sun’s center and undergoing a Mikheyev-Smirnov-Wolfenstein resonance in flavor space, due to the radially varying electron number density. The model neutrino energies are chosen to correspond to experimental bins in the Sudbury Neutrino Observatory and Borexino experiments, which measure electron-flavor survival probability at Earth. The procedure successfully finds consistency between the observed fluxes and the model, if the Mikheyev-Smirnov-Wolfenstein resonance—that is, flavor evolution due to solar electrons—is included in the dynamical equations representing the model.
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影响因子: --
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