《湮灭法典》
The Coannihilation Codex
摘要：
我们提出了一个简化模型的一般分类，导致暗物质（DM）共湮灭过程的形式DM + X $\rightarrow$ SM $_1$ + SM $_2$，其中X是一个共湮灭伙伴的DM粒子和SM $_1$，SM $_2$是标准模型领域。我们的分类也包括常规DM对湮灭的情况下，如果DM和X是相同的。每一个共融场景都激发了一个中介粒子M的引入，它可以属于标准模型，也可以是一个新的场，由此产生的暗区和标准模型之间的相互作用被实现为树级和四维耦合。我们构造了一个共湮灭模型的基，并根据DM，X和M的$SU(3)_C\times SU(2)_L\times U(1)_Y$量子数进行分类.我们的主要假设是，暗物质是电中性色单态，所有新粒子要么是标量，狄拉克或马约拉纳费米子，要么是矢量。我们说明了如何从电弱对称性破缺效应所产生的新的情况下，可以连接到我们的电弱对称简化模型。我们提供了一个全面的讨论我们的模型的现象学特征，包括物理学的热冻结，直接和间接的检测约束，特别是在大型强子对撞机（LHC）的搜索。许多新的签名，没有涵盖在目前的LHC搜索强调，并提出了新的和改进的LHC分析处理这些签名。我们讨论了如何使用共湮没简化模型以直接和透明的方式连接所有类别实验的结果。这一点是说明了一个特定的简化模型具有leptoquark介导的暗物质共湮灭现象的详细讨论。
英文摘要：
We present a general classification of simplified models that lead to dark matter (DM) coannihilation processes of the form DM + X $\rightarrow$ SM$_1$ + SM$_2$, where X is a coannihilation partner for the DM particle and SM$_1$, SM$_2$ are Standard Model fields. Our classification also encompasses regular DM pair annihilation scenarios if DM and X are identical. Each coannhilation scenario motivates the introduction of a mediating particle M that can either belong to the Standard Model or be a new field, whereby the resulting interactions between the dark sector and the Standard Model are realized as tree-level and dimension-four couplings. We construct a basis of coannihilation models, classified by the $SU(3)_C\times SU(2)_L\times U(1)_Y$ quantum numbers of DM, X and M. Our main assumptions are that dark matter is an electrically neutral color singlet and that all new particles are either scalars, Dirac or Majorana fermions, or vectors. We illustrate how new scenarios arising from electroweak symmetry breaking effects can be connected to our electroweak symmetric simplified models. We offer a comprehensive discussion of the phenomenological features of our models, encompassing the physics of thermal freeze-out, direct and indirect detection constraints, and in particular searches at the Large Hadron Collider (LHC). Many novel signatures that are not covered in current LHC searches are emphasized, and new and improved LHC analyses tackling these signatures are proposed. We discuss how the coannihilation simplified models can be used to connect results from all classes of experiments in a straightforward and transparent way. This point is illustrated with a detailed discussion of the phenomenology of a particular simplified model featuring leptoquark-mediated dark matter coannihilation.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
