论文标题

U(1)'模型的中微子振荡约束:从非标准相互作用到远程力

Neutrino Oscillation Constraints on U(1)' Models: from Non-Standard Interactions to Long-Range Forces

论文作者

Coloma, Pilar, Gonzalez-Garcia, M. C., Maltoni, Michele

论文摘要

我们从弱耦合的Lepton风味$ u(1)'$相互作用对太阳,大气,反应堆和长基线加速器中微子的演变中的物质相互作用中量化量表玻色子的影响。进行分析的相互作用长度,从太阳 - 地球距离到有效的接触中微子相互作用。我们调查$ \ sim 10000 $集合的型号,其特征在于六个相关费米昂$ u(1)'$费用,并发现在所有情况下,$ z'$的耦合和质量的约束都可以得出。我们还发现,$ U(1)'$模型费用中约有5%导致可行的LMA-D解决方案,但这仅在接触互动限制中才有可能。我们明确量化了各种模型的约束,包括$ u(1)_ {b-3l_e} $,$ u(1)_ {b-3l_μ} $,$ u(1)_ {b-3l_τ} $ $ u(1)_ {l_e-l_μ} $,$ u(1)_ {l_e-l_τ} $,$ u(1)_ {l_e- \ frac {1} {2} {2} {2}(l_μ+l_τ)} $。我们将振荡分析施加的约束与第五力搜索的最强界限,违反等效原理以及散射实验和白矮人冷却的界限进行了比较。我们的结果表明,一般而言,振荡分析比重力测试的现有界限改进了$ z'$浅的重力测试,而不是$ \ sim 10^{ - 11} $ ev。在接触互动限制中,我们发现,对于上面列出的大多数模型,$ g'$和$ m_ {z'} $的值为振荡分析提供的限制超出了实验室实验所施加的约束。最后,我们说明了$ z'$和耦合的范围,从而为两组型号提供了可行的LMA-D解决方案。

We quantify the effect of gauge bosons from a weakly coupled lepton flavor dependent $U(1)'$ interaction on the matter background in the evolution of solar, atmospheric, reactor and long-baseline accelerator neutrinos in the global analysis of oscillation data. The analysis is performed for interaction lengths ranging from the Sun-Earth distance to effective contact neutrino interactions. We survey $\sim 10000$ set of models characterized by the six relevant fermion $U(1)'$ charges and find that in all cases, constraints on the coupling and mass of the $Z'$ can be derived. We also find that about 5% of the $U(1)'$ model charges lead to a viable LMA-D solution but this is only possible in the contact interaction limit. We explicitly quantify the constraints for a variety of models including $U(1)_{B-3L_e}$, $U(1)_{B-3L_μ}$, $U(1)_{B-3L_τ}$, $U(1)_{B-\frac{3}{2}(L_μ+L_τ)}$, $U(1)_{L_e-L_μ}$, $U(1)_{L_e-L_τ}$, $U(1)_{L_e-\frac{1}{2}(L_μ+L_τ)}$. We compare the constraints imposed by our oscillation analysis with the strongest bounds from fifth force searches, violation of equivalence principle as well as bounds from scattering experiments and white dwarf cooling. Our results show that generically, the oscillation analysis improves over the existing bounds from gravity tests for $Z'$ lighter than $\sim 10^{-11}$ eV. In the contact interaction limit, we find that for most models listed above there are values of $g'$ and $M_{Z'}$ for which the oscillation analysis provides constraints beyond those imposed by laboratory experiments. Finally we illustrate the range of $Z'$ and couplings leading to a viable LMA-D solution for two sets of models.

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