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arXiv 2101.02170hep-phhep-ex
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惰性偶极模型中低质量区域的暗物质的遗迹密度:4。希格斯共振区

Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 4. The Higgs resonance region

Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty, Hao Sun

摘要:

研究了惰性偶态模型(IDM)中Higgs共振区暗物质湮灭截面的单圈电弱修正。如何实现的希格斯粒子的宽度,以正规化的幅度都在树的水平,并在一个循环连同模型的一个关键参数的重正化的程序,进行了彻底的审查。讨论超出了应用程序的遗迹密度计算,也超出了IDM,以便解决这些技术问题,可以在更广泛的范围内帮助。我们特别关注$b \bar b$最终状态和更复杂的三体最终状态$W f \bar f^\prime$的主导通道,其中由于干扰效应,存在共振和反共振。我们还讨论了如何整合在这样的配置时,转换成计算的文物密度的横截面。

英文摘要:

One-loop electroweak corrections to the annihilation cross-sections of dark matter in the Higgs resonance region of the inert doublet model (IDM) are investigated. The procedure of how to implement the width of the Higgs in order to regularise the amplitude both at tree-level and at one-loop together with the renormalisation of a key parameter of the model, are thoroughly scrutinised. The discussions go beyond the application to the relic density calculation and also beyond the IDM so that addressing these technical issues can help in a wider context. We look in particular at the dominant channels with the $b \bar b$ final state and the more involved 3-body final state, $W f \bar f^\prime$, where both a resonance and an anti-resonance, due to interference effects, are present. We also discuss how to integrate over such configurations when converting the cross-sections into a calculation of the relic density.

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。

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