The Universal Extra Dimensional Model with S**2/Z(2) extra-space
The Universal Extra Dimensional Model with S**2/Z(2) extra-space
复制标题
具有 S**2/Z(2) 额外空间的通用额外维度模型
DOI：
10.1016/j.nuclphysb.2009.11.023
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Masato Yamanaka
中科院分区：
文献类型：
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作者：
Nobuhito Maru,Takaaki Nomura;Joe Sato;Masato Yamanaka
我们提出了一个新的普适额外维模型，它定义在一个六维时空上，该时空具有一个两球轨道S2/Z2作为额外空间。我们通过选择规范对称性为SU（3）×SU（2）×U（1）Y×U（1）X，引入六维场的零模对应于标准模型粒子，并确定这些场在轨道S ~ 2/Z ~ 2上的边界条件来指定我们的模型。在那里引入了一个属于U（1）X的背景规范场，这是在四维时空中获得无质量手征费米子所必需的。然后，我们分析了Kaluza-Klein（KK）模式展开的字段在我们的模型，并推导出的质量谱的KK粒子。我们发现最轻的KK粒子是树水平上无质量规范玻色子的第一个KK粒子。我们还讨论了模型中KK模的KK宇称，并证实了最轻KK粒子的稳定性，这对暗物质物理是重要的。
We propose a new universal extra dimensional model that is defined on a six-dimensional spacetime which has a two-sphere orbifold S2/Z2as an extra-space. We specify our model by choosing the gauge symmetry as SU(3)×SU(2)×U(1)Y×U(1)X, introducing field contents in six dimensions as their zero modes correspond to the standard model particles, and determining a boundary condition of these fields on orbifold S2/Z2. A background gauge field that belongs to U(1)Xis introduced there, which is necessary to obtain massless chiral fermions in four-dimensional spacetime. We then analyze Kaluza–Klein (KK) mode expansion of the fields in our model and derive the mass spectrum of the KK particles. We find that the lightest KK particles are the 1st KK particles of massless gauge bosons at tree level. We also discuss the KK parity of the KK modes in our model and confirm the stability of the lightest KK particle which is important for dark matter physics.