Recently, conceptually new physics beyond the Standard Model has been proposed by Georgi, where a new physics sector becomes conformal and provides "unparticle" which couples to the Standard Model sector through higher dimensional operators in low energy effective theory. Among several possibilities, we focus on operators involving the (scalar) unparticle, Higgs and the gauge bosons. Once the Higgs develops the vacuum expectation value (VEV), the conformal symmetry is broken and as a result, the mixing between the unparticle and the Higgs boson emerges. In this paper, we consider a natural realization of bosonic seesaw in the context of unparticle physics. In this framework, the negative mass squared or the electroweak symmetry breaking vacuum is achieved as a result of mass matrix diagonalization. In the diagonalization process, it is important to have zero value in the (1,1)-element of the mass matrix. In fact, the conformal invariance in the hidden sector can actually assure the zero of that element. So, the bosonic seesaw mechanism for the electroweak symmetry breaking can naturally be understood in the framework of unparticle physics.
Dark matter as the source of neutrino mass: theory overview and experimental prospects
Universidad Adolfo Ibáñez（阿道夫·伊巴涅斯大学）；Universitat de Valencia（瓦伦西亚大学）；CSIC（西班牙国家研究委员会）；INFN Cosenza（科森扎意大利国家核物理研究所）；Università della Calabria（卡拉布里亚大学）；Korea Institute for Advanced Study（韩国高等研究院）；Ramakrishna Mission Residential College (Autonomous)（罗摩克里希纳传教士寄宿学院（自治））
A neutrino mass model with hidden $U(1)$ gauge symmetry
我们提出了一个由隐藏的$U(1)$规范对称性控制的反跷跷板模型的实现，并讨论了通过施加$Z_2$宇称对玻色暗物质候选者的影响.我们给出了标量谱的细节，并应用Casas-Ibarra参数化方法对中微子振荡数据进行了拟合。对于该模型，提取允许区域来解释观测到的遗迹密度和μ子$g-2$差异，满足包含DM的味约束。我们将DM湮灭解释为包含所有SM带电费米子的$\bar f f $，并研究了直接探测DM-Higgs耦合的束缚。最后，根据带电轻子对签名加上丢失的横能量，探讨了LHC DM产生。
