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Neutrino Oscillations and Lorentz Invariance Violation
Universe ( IF 2.5 ) Pub Date : 2020-02-27 , DOI: 10.3390/universe6030037
Marco Danilo Claudio Torri

This work explores the possibility of resorting to neutrino phenomenology to detect evidence of new physics, caused by the residual signals of the supposed quantum structure of spacetime. In particular, this work investigates the effects on neutrino oscillations and mass hierarchy detection, predicted by models that violate Lorentz invariance, preserving the spacetime isotropy and homogeneity. Neutrino physics is the ideal environment where conducting the search for new “exotic” physics, since the oscillation phenomenon is not included in the original formulation of the minimal Standard Model (SM) of particles. The confirmed observation of the neutrino oscillation phenomenon is, therefore, the first example of physics beyond the SM and can indicate the necessity to resort to new theoretical models. In this work, the hypothesis that the supposed Lorentz Invariance Violation (LIV) perturbations can influence the oscillation pattern is investigated. LIV theories are indeed constructed assuming modified kinematics, caused by the interaction of massive particles with the spacetime background. This means that the dispersion relations are modified, so it appears natural to search for effects caused by LIV in physical phenomena governed by masses, as in the case of neutrino oscillations. In addition, the neutrino oscillation phenomenon is interesting since there are three different mass eigenstates and in a LIV scenario, which preserves isotropy, at least two different species of particle must interact.

中文翻译:

中微子振荡和洛伦兹不变性违反

这项工作探索了利用中微子现象学来检测新物理学证据的可能性,这是由假定的时空量子结构的残留信号引起的。尤其是,这项工作研究了对中微子振荡和质量等级检测的影响,这是由违反洛伦兹不变性的模型预测的,保留了时空各向同性和同质性。中微子物理学是进行新的“外来”物理学探索的理想环境,因为振动现象不包含在最小粒子标准模型(SM)的原始公式中。因此,对中微子振荡现象的确认观察是SM以外的物理学的第一个例子,可以表明诉诸新理论模型的必要性。在这项工作中 研究了假设的洛伦兹不变性扰动会影响振荡模式的假设。LIV理论确实是在假设运动学被修改的情况下构造的,这是由大质量粒子与时空背景的相互作用引起的。这意味着色散关系被修改,因此在中微子振荡的情况下,在质量控制的物理现象中寻找由LIV引起的影响似乎很自然。此外,中微子振荡现象很有趣,因为存在三种不同的质量本征态,并且在保留各向同性的LIV场景中,至少两种不同的粒子必须相互作用。LIV理论确实是在假设运动学被修改的情况下构造的,这是由大质量粒子与时空背景的相互作用引起的。这意味着色散关系被修改,因此在中微子振荡的情况下,在质量控制的物理现象中寻找由LIV引起的影响似乎很自然。此外,中微子振荡现象很有趣,因为存在三种不同的质量本征态,并且在保留各向同性的LIV场景中,至少两种不同的粒子必须相互作用。LIV理论确实是在假设运动学被修改的情况下构造的,这是由大质量粒子与时空背景的相互作用引起的。这意味着色散关系被修改,因此在中微子振荡的情况下,在质量控制的物理现象中寻找由LIV引起的影响似乎很自然。此外,中微子振荡现象很有趣,因为存在三种不同的质量本征态,并且在保留各向同性的LIV场景中,至少两种不同的粒子必须相互作用。
更新日期:2020-02-27
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