绝对中微子质量观测的低能约束和左右对称模型中的轻子风味违逆

S. Goswami, K. N. Vishnudath
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引用次数: 4

摘要

在最小左右对称模型的背景下,我们研究了三个绝对中微子质量可观测值之间的相关性——通过无中微子双β衰变获得的有效马约拉纳质量($m_{ee}$),通过单β衰变实验测量的电子中微子质量($m_{\beta}$)和受宇宙学观测约束的光中微子质量总和($\Sigma$)。本文考虑了两种现象学上有趣的i型跷跷板优势和ii型跷跷板优势。我们考虑了来自轻子风味破坏、单$\beta$衰变、宇宙学和无中微子双β衰变的独立约束,并确定了在未来实验中可以探测的组合允许参数空间。我们还分析了不同质量变量之间的相关性和张力。此外,还确定了轻子风味违和对重粒子质量的约束以及三个绝对中微子质量观测值的界。我们证明了这些约束可以排除一些没有被对撞机实验探测的参数空间。
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Low energy constraints from absolute neutrino mass observables and lepton flavor violation in left-right symmetric model
We have studied the correlations among the three absolute neutrino mass observables - the effective Majorana mass ($m_{ee}$) which can be obtained from neutrinoless double beta decay, the electron neutrino mass ($m_{\beta}$) which is measured in single beta decay experiments and the sum of the light neutrino masses ($\Sigma$) which is constrained from cosmological observations, in the context of minimal left-right symmetric model. Two phenomenologically interesting cases of type-I seesaw dominance as well as type-II seesaw dominance have been considered. We have taken into account the independent constraints coming from lepton flavor violation, single $\beta$ decay, cosmology and neutrinoless double beta decay and have determined the combined allowed parameter space that can be probed in the future experiments. We have also analyzed the correlations and tensions between the different mass variables. In addition, the constraints on the masses of the heavy particles coming from lepton flavor violation and the bounds on three absolute neutrino mass observables are also determined. We show that these constraints can rule out some of the parameter space which are not probed by the collider experiments.
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