论文标题

强烈耦合$ e_8 \ times e_8 $杂弦:几何$ \&$现象学

The strongly coupled $E_8\times E_8$ heterotic string: Geometry $\&$ Phenomenology

论文作者

Dumitru, Sebastian

论文摘要

在强烈耦合的$ e_8 \ times e_8 $杂弦理论的背景下,我们分析了$ b-l $ mssm,这是标准模型的现实超对称扩展,从低能的现象学和高能量字符串的角度来看。从正式的角度来看,我们检查了弦真空的不同结构,这些弦真空满足了一系列理论和现象学的约束。这样的真空配置是无异常的,在紧凑型尺度上保存$ n = 1 $ susy,并在可见的粒子扇区中产生$(10)$统一量表和量规耦合的正确值。此外,我们通过隐藏区域中的gaugino凝结分析了我们构建的真空类型的可能破裂的机制。为了将这些发现与实验联系起来,我们研究了在不久的将来检测LHC $ B-L $ MSSM的前景。在这种特定情况下,我们表明违反超对称颗粒的衰减可以正常直接在地图集和CMS检测器上进行检测。对这些过程的检测不仅是“超出标准模型”物理学的明确指示,而且还会强烈暗示存在$ n = 1 $ susy具有自发损坏的R-Parity。

Working within the context of the strongly coupled $E_8\times E_8$ heterotic string theory, we analyze the $B-L$ MSSM, a realistic supersymmetric extension of the Standard Model, from both a low-energy phenomenology and high-energy string perspective. From a formal point of view, we examine different constructions of string vacua, which satisfy a series of theoretical and phenomenological constraints. Such vacua configurations are anomaly-free, preserve $N = 1$ SUSY at the compactification scale and yield the correct value for the $SO(10)$ unification scale and gauge coupling in the visible particle sector. Furthermore, we analyze a possible SUSY-breaking mechanism for the type of vacua we construct, via gaugino condensation in the hidden sector. In an attempt to connect these findings to experiment, we study the prospects of detecting the $B-L$ MSSM at the LHC in the near future. Within this specific context, we show that R-parity violating decays of supersymmetric particles could be amenable to direct detection at the ATLAS and CMS detectors. Detection of these processes would not only be an explicit indication of "Beyond the Standard Model" physics, but would also hint strongly at the existence of $N=1$ SUSY with spontaneously broken R-parity.

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