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arXiv 1504.05949hep-ph
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惰性偶态模型中的电弱相变

The Electroweak Phase Transition in the Inert Doublet Model

Nikita Blinov, Stefano Profumo, Tim Stefaniak

摘要:

研究了惰性双态模型中一级电弱相变的强度,其中粒子暗物质由最轻的中性惰性希格斯玻色子组成。在有限温度有效势和电弱相变的描述和处理方面,我们改进了以前的研究。我们专注于一组基准模型的灵感来自IDM中的关键机制,导致一个可行的暗物质粒子候选人,并说明如何提高电弱相变的强度,通过调整尚未发现的IDM希格斯状态的质量。我们认为,在各种DM群众,获得足够强的一阶相变是一个通用的可能性,在IDM。我们发现,由于直接暗物质搜索和对撞机的限制,一个足够强的过渡和热遗迹密度匹配的通用DM丰度是可能的,只有在希格斯漏斗制度。

英文摘要:

We study the strength of a first-order electroweak phase transition in the Inert Doublet Model (IDM), where particle dark matter (DM) is comprised of the lightest neutral inert Higgs boson. We improve over previous studies in the description and treatment of the finite-temperature effective potential and of the electroweak phase transition. We focus on a set of benchmark models inspired by the key mechanisms in the IDM leading to a viable dark matter particle candidate, and illustrate how to enhance the strength of the electroweak phase transition by adjusting the masses of the yet undiscovered IDM Higgs states. We argue that across a variety of DM masses, obtaining a strong enough first-order phase transition is a generic possibility in the IDM. We find that due to direct dark matter searches and collider constraints, a sufficiently strong transition and a thermal relic density matching the universal DM abundance is possible only in the Higgs funnel regime.

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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