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arXiv 1503.08703hep-phhep-ex
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μ介子(g-2)灯柱下的非普适Gaugino质量模型

Non-universal Gaugino mass models under the lamppost of muon (g-2)

Joydeep Chakrabortty, Arghya Choudhury, Subhadeep Mondal

摘要:

在统一的$\mathcal{N}=1$超引力方案中,高根质量可以是非普适的。这些非普适性的模式由可见光区非单重手征超场的真空期望值决定。本文分析了高吉诺质量之间的模型无关关联,旨在解释μ子(g-2)的$[1÷3]σ$过剩($Δa_μ$)。我们还封装了其他低和高尺度参数之间的相互联系,与对撞机的约束,希格斯质量,遗物密度和味道数据兼容。我们注意到现有的非通用模型不足以在$[1÷2]σ$水平上解释$Δa_μ$。在这个过程中,我们还显示了最近的限制的影响,从寻找消失的轨道和长寿命的带电粒子在大型强子对撞机。这些是迄今为止最严格的限制,排除了其他约束所允许的大参数空间。我们还进行了模型引导的分析,其中的高根质量是来自单重态和非单重态手征超场的贡献的线性组合。这里,引入了一个新的混合参数。遵循早期的方法,我们已经能够限制这个混合参数,并在这个概念上确定有前途的模型。

英文摘要:

In unified $\mathcal{N}=1$ supergravity scenario the gaugino masses can be non-universal. The patterns of these non-universalities are dictated by the vacuum expectation values of non-singlet chiral super-fields in visible sector. Here, we have analysed the model independent correlations among the gaugino masses with an aim to explain the $[1÷3]σ$ excess of muon (g-2) ($Δa_μ$). We have also encapsulated the interconnections among other low and high scale parameters, compatible with the collider constraints, Higgs mass, relic density and flavour data. We have noted that the existing non-universal models are not capable enough to explain $Δa_μ$ at $[1÷2]σ$ level. In the process, we have also shown the impact of recent limits from the searches for disappearing track and long lived charged particles at the LHC. These are the most stringent limits so far ruling out a large parameter space allowed by other constraints. We have also performed model guided analysis where gaugino masses are linear combination of contributions coming from singlet and non-singlet chiral super-fields. Here, a new mixing parameter has been introduced. Following the earlier methodology, we have been able to constrain this mixing parameter and pin down the promising models on this notion.

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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