论文标题
在中微子非标准相互作用的存在下解决NO $ν$ A和T2K张力
Resolving the NO$ν$A and T2K tension in the presence of Neutrino Non-Standard interactions
论文作者
论文摘要
两个长基线加速器实验的当前数据没有$ν$ a和t2k，显示了超过90 $ \％$ c.l的张力。对于2个自由度，在确定标准CP相$δ_ {\ Mathrm {cp}} $的情况下，如果中微子正常订购（NO）。否$ν$ a可以测量接近$δ_{\ mathrm {cp}} \ sim0.8π$的值，而t2k则优先考虑$δ_ {\ mathrm {cp}}}} \ sim 1.4π$的值。我们表明，如果人们假设存在涉及变化的$ e-e-μ$的中微子的中性非标准相互作用（NSI），则可以解决这种张力。 \ sim | \ varepsilon_ {eτ} | \ sim 0.2 $。值得注意的是，我们的分析表明，在存在此类NSI的情况下，这两个实验都指向标准CP期$δ_ {\ Mathrm {cp}} \ sim3π/2 $的相同共同值，从而指示标准$3ν$3ν$框架中的最大CP-violation。我们还表明，新的CP---- $ ϕ_ {eμ} $或$ ϕ_ {eτ} $的最佳拟合值接近$ \ sim3π/2 $，因此指向NSI部门的最大CP-Violation。
The current data of the two long-baseline accelerator experiments NO$ν$A and T2K, shows a tension at more than 90$\%$ C.L. for 2 degrees of freedom, in the determination of the standard CP-phase $δ_{\mathrm {CP}}$ in case of neutrino normal ordering (NO). NO$ν$A measures the value close to $δ_{\mathrm {CP}} \sim 0.8 π$, while T2K prefers the value of $δ_{\mathrm {CP}} \sim 1.4 π$. We show that such a tension can be resolved if one hypothesizes the existence of neutral-current non-standard interactions (NSI) of neutrinos involving the flavor changing type $e-μ$ or the $e-τ$ sectors with couplings $|\varepsilon_{eμ}| \sim |\varepsilon_{eτ}|\sim 0.2$. Remarkably, our analyses show that in the presence of such NSI, both the experiments point towards the same common value of the standard CP-phase $δ_{\mathrm {CP}} \sim 3π/2$, thereby indicating towards the maximal CP-violation in the standard $3ν$ framework. We also show that the best fit values of the new CP-phases $ϕ_{eμ}$ or $ ϕ_{eτ}$ are close to $\sim 3π/2$, hence pointing towards the maximal CP-violation in the NSI sector.
