论文标题

损坏的$μ-τ$对称性的意义在关联$δ_{cp} $,$θ_{13} $,最轻的中微子质量和中微子双β衰减$0νββ$

Significance of broken $ μ-τ$ Symmetry in correlating $ δ_{CP} $, $ θ_{13} $, Lightest neutrino Mass and neutrinoless double beta decay $ 0νββ$

论文作者

Ghosh, Gayatri

论文摘要

轻质的CP违反了光中微子部门的$δ_{CP} $,并且通过当前物质反物质不对称的瘦肉发生彼此需要。在光中微子振荡中探测CP违规是当今具有挑战性的任务之一。反应堆混合角$θ_{13} $在反应堆实验中测量的LBL,在中微子实验中具有高精度的沙丘,这表明朝着范围的巨大维度,以检测$δ__{CP} $。 The correlation between leptonic Dirac CPV phase $ δ_{CP} $, reactor mixing angle $ θ_{13} $, lightest neutrino mass $ m_{1} $ and matter antimatter asymmetry of the Universe within the framework of $ μ-τ$ symmetry breaking assuming the type I seesaw dominance is extensively studied here. $μ -τ$对称性的微小破裂允许在中微子振荡中违反大型Dirac CP违反阶段,这又是对$θ_{13} $的测量值的认识的特征\fracπ{4} $。 $μ-τ$对称性的精确破裂是通过将120件夹具添加到10 $+$ $ \ bar {126} $尺寸表示Higgs的情况下实现的。在此,在此要求通过卵生殖发生的机制,估计的三维密度参数参数空间$ MM $ M_ {1} $,$δ_{CP} $,反应堆混合角度$θ_{13} $在此受到限制。进行数值分析$ M_ {1} $,$δ_{cp} $,$θ_{13} $的允许参数空间,可以产生可观察到的巴里昂与宇宙的光子密度比。

Leptonic CP Violating Phase $ δ_{CP} $ in the light neutrino sector and leptogenesis via present matter antimatter asymmetry of the Universe entails each other. Probing CP violation in light neutrino oscillation is one of the challenging tasks today. The reactor mixing angle $ θ_{13} $ measured in reactor experiments, LBL, DUNE with high precision in neutrino experiments indicates towards the vast dimension of scope to detect $ δ_{CP} $. The correlation between leptonic Dirac CPV phase $ δ_{CP} $, reactor mixing angle $ θ_{13} $, lightest neutrino mass $ m_{1} $ and matter antimatter asymmetry of the Universe within the framework of $ μ-τ$ symmetry breaking assuming the type I seesaw dominance is extensively studied here. Small tiny breaking of the $ μ-τ$ symmetry allows a large Dirac CP violating phase in neutrino oscillation which in turn is characterised by awareness of measured value of $ θ_{13} $ and to provide a hint towards a better understanding of the experimentally observed near maximal value of $ ν_μ -ν_τ $ mixing angle $ θ_{23}\simeq \fracπ{4}$. Precise breaking of the $ μ-τ$ symmetry is achieved by adding a 120 plet Higgs to the 10 $+$ $\bar{126}$ dimensional representation of Higgs. The estimated three dimensional density parameter space of lightest neutrino mass $ m_{1} $, $ δ_{CP} $, reactor mixing angle $ θ_{13} $, is constrained here for the requirement of producing the observed value of baryon asymmetry of the Universe through the mechanism of leptogenesis. Carrying out numerical analysis the allowed parameter space of $ m_{1} $, $ δ_{CP} $, $ θ_{13} $, is found out which can produce the observed baryon to photon density ratio of the Universe.

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