戈尔德斯蒂尼
Goldstini
摘要：
超对称现象学在很大程度上被束缚在超对称破缺起源于单一来源的假设上。在本文中，我们放松了这一基本假设，并考虑了一个独立打破超对称性的部门的多重性，从而产生了相应的多重性的goldstini。当一个哥德斯蒂尼的线性组合被超级希格斯机制吃掉时，正交组合仍然作为物理自由度保留在光谱中。有趣的是，超引力效应导致了Goldstini的普遍树级质量，正好是引力子质量的两倍。由于可见扇形场可以主要耦合到戈尔茨坦而不是引力子，这个框架允许从传统的超对称现象学的实质性偏离。事实上，这甚至发生在传统的调解方案是由额外的超对称性破缺部门完全隔离增强。我们讨论了一些引人注目的对撞机签名，包括各种新的衰变模式的最轻的可观测扇区超对称粒子，gravitinoless规范介导的光谱，并与多个位移顶点的事件。我们还描述了Goldstini宇宙学和Goldstini暗物质的可能性。
英文摘要：
Supersymmetric phenomenology has been largely bound to the hypothesis that supersymmetry breaking originates from a single source. In this paper, we relax this underlying assumption and consider a multiplicity of sectors which independently break supersymmetry, thus yielding a corresponding multiplicity of goldstini. While one linear combination of goldstini is eaten via the super-Higgs mechanism, the orthogonal combinations remain in the spectrum as physical degrees of freedom. Interestingly, supergravity effects induce a universal tree-level mass for the goldstini which is exactly twice the gravitino mass. Since visible sector fields can couple dominantly to the goldstini rather than the gravitino, this framework allows for substantial departures from conventional supersymmetric phenomenology. In fact, this even occurs when a conventional mediation scheme is augmented by additional supersymmetry breaking sectors which are fully sequestered. We discuss a number of striking collider signatures, including various novel decay modes for the lightest observable-sector supersymmetric particle, gravitinoless gauge-mediated spectra, and events with multiple displaced vertices. We also describe goldstini cosmology and the possibility of goldstini dark matter.
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