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arXiv 2104.04458hep-ph
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根据新的$(g-2)_μ$测定,

GUT-constrained supersymmetry and dark matter in light of the new $(g-2)_μ$ determination

Manimala Chakraborti, Leszek Roszkowski, Sebastian Trojanowski

摘要:

最近由基于费米实验室的μ g-2实验对$(g-2)_μ$异常的确认对于具有中性伴子暗物质(DM)的软破缺超对称(SUSY)模型中的允许粒子谱具有重要意义。一般来说,DM必须相当轻,质量高达几百GeV,如果要提供宇宙中大部分的DM,则以双星为主。否则,一个higgsino或wino为主的DM也是允许的,但只能作为一个强次显性成分,最多占总密度的百分之几。这些一般模式可以很容易地在超对称性的现象学模型中找到,但在GUT约束的情况下,这证明更具挑战性。在本文中,我们重新审视这个问题的框架内,一些统一的超对称模型与不同的大统一理论边界条件的软质量。我们研究了所谓的非普适的gaugino模型(NUGM),其中的gluino的质量是disupersible从那些的bino和wino和SO(10)和SU(5)GUT启发的模型作为例子。我们发现,在这些统一的框架中,上述两个一般模式的DM也可以找到,因此μ子异常也可以容纳,不像在最简单的框架CMSSM或NUHM。我们显示的直接检测截面的点,不满足μ子异常的结果值。另一方面,在LHC上获得这些解决方案将是具有挑战性的,因为所得光谱通常非常压缩。

英文摘要:

The recent confirmation by the Fermilab-based Muon g-2 experiment of the $(g-2)_μ$ anomaly has important implications for allowed particle spectra in softly broken supersymmetry (SUSY) models with neutralino dark matter (DM). Generally, the DM has to be quite light, with the mass up to a few hundred GeV, and bino-dominated if it is to provide most of DM in the Universe. Otherwise, a higgsino or wino dominated DM is also allowed but only as a strongly subdominant component of at most a few percent of the total density. These general patterns can easily be found in the phenomenological models of SUSY but in GUT-constrained scenarios this proves much more challenging. In this paper we revisit the issue in the framework of some unified SUSY models with different GUT boundary conditions on the soft masses. We study the so-called non-universal gaugino model (NUGM) in which the mass of the gluino is disunified from those of the bino and the wino and an SO(10) and an SU(5) GUT-inspired models as examples. We find that in these unified frameworks the above two general patterns of DM can also be found, and thus the muon anomaly can also be accommodated, unlike in the simplest frameworks of the CMSSM or the NUHM. We show the resulting values of direct detection cross-section for points that do and do not satisfy the muon anomaly. On the other hand, it will be challenging to access those solutions at the LHC because the resulting spectra are generally very compressed.

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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