在JUNO实验中区分太阳区的带电流标量NSI
Disentangling Charged-Current Scalar NSI from the Solar Sector at JUNO
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中文总结 AI 辅助
本研究在中微子振荡量子场论框架下，利用JUNO反应堆反中微子数据约束带电流标量NSI，推导高精度存活概率解析表达式，首次单参数测定NSI参数，且一年数据可在3σ置信水平打破太阳混合角简并。
中文摘要 AI 辅助
我们在中微子振荡的量子场论框架下，利用反应堆反中微子对带电流标量非标准相互作用（NSI）开展约束研究。我们推导了包含标量NSI贡献的电子反中微子存活概率的解析表达式，精度达到$\u003cemph\u003eO\u003c/emph\u003e(ε^{4})$量级，并表明这些效应会引发能谱畸变，为$θ_{12}$提供了大混合角解。利用59.1天及初步207.2天的JUNO数据集，我们首次通过反应堆实验以单参数形式（而非味道求和组合）测定了中微子振荡的NSI参数。假设取一年的数据，我们证明仅靠太阳区分析就能在3σ置信水平下打破与太阳混合角的简并性。
英文摘要
We constrain charged-current scalar non-standard interaction with reactor antineutrinos within a quantum field theory framework of neutrino oscillations. We derive an analytical expression up to $\mathcal{O}(\varepsilon^{4})$ for the electron antineutrino survival probability including scalar NSI contributions, and show that these effects induce spectral distortions that admit a large mixing angle solution for $θ_{12}$. Using the 59.1-day and preliminary 207.2-day JUNO datasets, we obtain the first neutrino-oscillation determination of NSI parameters individually, rather than in a flavor-summed combination, from reactor experiments. Assuming one year of data taken, we show that the only solar sector analysis breaks the degeneracy with the solar mixing angle at $3σ$ of C.L.
