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arXiv 1111.6831hep-ph
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介于WIMP、FIMP和EWIP暗物质之间的中间框架

An intermediate framework between WIMP, FIMP, and EWIP dark matter

Carlos E. Yaguna

摘要:

弱相互作用大质量粒子(WIMP)、弱相互作用大质量粒子(FIMP)和极弱相互作用大质量粒子(EEP)暗物质是解释暗物质的不同理论框架。在本文中,我们研究了一个中间场景,结合了这三个框架的功能。它由一种弱相互作用粒子组成--一种弱相互作用粒子--它在早期宇宙中没有达到热平衡--一种弱相互作用粒子--它的残余密度由宇宙的再加热温度决定--一种弱相互作用粒子。作为一个例子,这个框架的显式实现,基于单重标量模型的暗物质,详细分析。特别是,文物密度作为模型参数的函数进行了研究,并确定了在此中间方案中的新的可行区域。最后,它表明,这种替代框架的暗物质允许任意重的暗物质粒子,它表明暗物质和通货膨胀之间的连接。

英文摘要:

WIMP (Weakly Interacting Massive Particle), FIMP (Feebly interacting Massive Particle) and EWIP (Extremely Weakly Interacting Particle) dark matter are different theoretical frameworks that have been postulated to explain the dark matter. In this paper we examine an intermediate scenario that combines features from these three frameworks. It consists of a weakly interacting particle --a la WIMP-- that does not reach thermal equilibrium in the early Universe --a la FIMP-- and whose relic density is determined by the reheating temperature of the Universe --a la EWIP. As an example, an explicit realization of this framework, based on the singlet scalar model of dark matter, is analyzed in detail. In particular, the relic density is studied as a function of the parameters of the model, and the new viable region within this intermediate scenario is determined. Finally, it is shown that this alternative framework of dark matter allows for arbitrarily heavy dark matter particles and that it suggests a connection between dark matter and inflation.

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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