Model of TeV scale physics for neutrino mass, dark matter, and baryon asymmetry and its phenomenology
Model of TeV scale physics for neutrino mass, dark matter, and baryon asymmetry and its phenomenology
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DOI：
10.1103/physrevd.80.033007
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发表时间：
2009-04
影响因子：
5
通讯作者：
M. Aoki;S. Kanemura;O. Seto
中科院分区：
文献类型：
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作者：
M. Aoki;S. Kanemura;O. Seto
我们讨论了[M. Aoki，S. Kanemura和O.濑户，物理学评论快报。102，051805（2009）]，其中中微子振荡，暗物质和重子不对称性的宇宙将同时解释的TeV尺度的物理不引入非常高的质量标度。引入了一个精确的离散Z{sub 2}对称性，在这个对称性下，新的粒子内容（一个真实的单重标量场，一对带电的单重标量场和TeV尺度的右手中微子）被指定为具有奇数量子数，而普通的规范场，夸克和轻子以及两个Higgs二重态是偶数。由于精确的Z{sub 2}对称性，在三圈水平上产生微小的中微子质量，这也保证了暗物质候选者的稳定性。额外的希格斯双重态不仅对微小的中微子质量是必需的，而且对成功的电弱重子生成也是必需的。我们讨论了模型的唯象性质，发现在现有实验数据的约束下，存在同时解决上述三个问题的成功方案。然后，我们讨论在这种情况下，在正在进行的和未来的实验预测。事实证明，该模型提供了有区别的预测，特别是在希格斯物理学和暗物质物理学中，因此它在不久的将来是可检验的。«少
We discuss some details of the model proposed [M. Aoki, S. Kanemura, and O. Seto, Phys. Rev. Lett. 102, 051805 (2009)], in which neutrino oscillation, dark matter, and baryon asymmetry of the Universe would be simultaneously explained by the TeV-scale physics without introducing very high mass scales. An exact discrete Z{sub 2} symmetry is introduced, under which new particle contents (a real singlet scalar field, a pair of charged singlet scalar fields, and TeV-scale right-handed neutrinos) are assigned to have odd quantum number, whereas ordinary gauge fields, quarks and leptons, and two Higgs doublets are even. Tiny neutrino masses are generated at the three-loop level due to the exact Z{sub 2} symmetry, by which stability of the dark matter candidate is also guaranteed. The extra Higgs doublet is required not only for the tiny neutrino masses but also for successful electroweak baryogenesis. We discuss phenomenological properties of the model, and find that there are successful scenarios in which the above three problems are solved simultaneously under the constraint from current experimental data. We then discuss predictions in such scenarios at ongoing and future experiments. It turns out that the model provides discriminative predictions especially in Higgs physics and dark mattermore » physics, so that it is testable in the near future.« less