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arXiv 2602.05564hep-phhep-ex
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JUNO中中微子质量顺序面临标量非标准相互作用诱导的共振风险

Neutrino mass ordering in JUNO at risk from scalar NSI induced resonance

KTH Royal Institute of Technology(皇家理工学院);The Oskar Klein Centre for Cosmoparticle Physics(奥斯卡·克莱因宇宙粒子物理中心)

Sandhya Choubey, Andreas Lund

AI总结:

JUNO中微子质量顺序测定可能因标量非标准相互作用诱导的共振效应而失效

摘要:

确定中微子质量顺序(NMO)是目前正在进行的JUNO反应堆实验的主要目标。我们表明,在存在由超出标准模型标量(SNSI)介导的非标准中微子相互作用时,JUNO测量NMO可能会严重恶化。取反置顺序和最轻中微子质量在$ m_l=0.01 $ eV时,对于SNSI参数值在范围$ η_{ee}< -7.1\times 10^{-3} $和$ η_{ee} > 3.3\times 10^{-3} $内,NMO灵敏度低于$ 2σ $。更重要的是,对于$ η_{ee} \gtrsim 5.7\times 10^{-3} $,JUNO的NMO灵敏度完全丧失。我们表明,这是由于存在一个此前未被认识的混合角$ θ_{12} $的共振增强,导致质量顺序退化。

英文摘要:

The determination of neutrino mass ordering (NMO) is the primary goal of the currently running JUNO reactor experiment. We show that the measurement of NMO at JUNO may severely deteriorate in the presence of non-standard neutrino interactions mediated by a beyond standard model scalar (SNSI). Taking inverted ordering and the lightest neutrino mass at $m_l=0.01$ eV, the NMO sensitivity falls below $2σ$ for SNSI parameter values in the range $η_{ee}< -7.1\times 10^{-3}$ and $η_{ee} > 3.3\times 10^{-3}$. More importantly, for $η_{ee} \gtrsim 5.7\times 10^{-3}$ the NMO sensitivity in JUNO is completely lost. We show that this is due to the presence of a hitherto unrecognized resonant enhancement of the mixing angle $θ_{12}$, which gives rise to a mass ordering degeneracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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