High-quality axions in solutions to the μ problem
High-quality axions in solutions to the μ problem
复制标题
解决μ问题的高质量轴子
DOI：
10.1103/physrevd.104.055014
复制
发表时间：
2021
影响因子：
5
通讯作者：
Martin, Stephen P.
中科院分区：
文献类型：
--
作者：
Bhattiprolu, Prudhvi N.;Martin, Stephen P.
基于Kim-Nilles机制的超对称性问题的解决方案自然以Dine-Fischler-Srednicki-Zhitnitsky（DFSZ）轴子为特征，其衰变常数为普朗克和TeV尺度的几何平均值量级，符合天体物理学极限。我们调查这种类型的最小模型与两个规范单重场，打破了Peccei-Quinn对称性和扩展与一个额外的矢量夸克和轻子超多重态符合规范耦合统一。我们发现，有许多anomaly-free离散对称性，取决于vectorlike物质的内容，保护Peccei-Quinn对称性，以足够高的顺序来解决强问题。我们研究了这类模型中的轴子耦合。这种类型的模型是自动免费的畴壁问题，需要至少一对强烈相互作用的矢量状的多重质量在中间尺度和预测的轴子耦合，大大增强了最小的超对称DFSZ模型相比，把它们的范围内提出的轴子搜索。
Solutions to theproblem in supersymmetry based on the Kim-Nilles mechanism naturally feature a Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axion with a decay constant of the order of the geometric mean of the Planck and TeV scales, consistent with astrophysical limits. We investigate minimal models of this type with two gauge-singlet fields that break a Peccei-Quinn symmetry and extensions with an extra vectorlike quark and lepton supermultiplets consistent with gauge coupling unification. We show that there are many anomaly-free discrete symmetries, depending on the vectorlike matter content, that protect the Peccei-Quinn symmetry to sufficiently high order to solve the strongproblem. We study the axion couplings in this class of models. Models of this type that are automatically free of the domain wall problem require at least one pair of strongly interacting vectorlike multiplets with mass at the intermediate scale and predict axion couplings that are greatly enhanced compared to the minimal supersymmetric DFSZ models, putting them within reach of proposed axion searches.