Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking
Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking
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超自然超对称：异常介导的超对称破缺的现象学含义
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发表时间：
1999
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通讯作者：
T. Moroi
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作者：
Jonathan L. Feng;T. Moroi
我们讨论超对称模型的唯象，其中超对称破缺项是由超Weyl反常引起的。当超对称破缺发生在另一个世界，也就是在另一个膜上时，这样的场景被设想出来。我们回顾了异常中介框架，并详细研究了仅用3+1个参数：m{subaux}，m{sub0}，tan{beta}和sgn({u})参数化的最小异常中介模型。重整化群方程表现出一种新的“焦点”行为(相对于不动点)，它允许夸克和斯普顿质量远远超出它们通常的自然界。我们介绍了超粒子光谱，并强调了对高能对撞机的几个启示。存在三个最轻的超对称粒子(LSP)候选者：W-ino、Stau和tau中微子。对于W-ino LSP方案，最好是质量分裂最小的轻型W-ino三联体；这样的W-INO是在第二次费米实验室Tevatron搜索的范围内。最后，我们研究了各种灵敏的低能探测器，包括b{产额}S{伽马}，介子的反常磁矩，电子和中子的电偶极矩。(C)2000年美国物理学会。
We discuss the phenomenology of supersymmetric models in which supersymmetry breaking terms are induced by the super-Weyl anomaly. Such a scenario is envisioned to arise when supersymmetry breaking takes place in another world, i.e., on another brane. We review the anomaly-mediated framework and study in detail the minimal anomaly-mediated model parametrized by only 3+1 parameters: M{sub aux}, m{sub 0}, tan {beta}, and sgn({mu}). The renormalization group equations exhibit a novel ''focus point'' (as opposed to fixed point) behavior, which allows squark and slepton masses far above their usual naturalness bounds. We present the superparticle spectrum and highlight several implications for high energy colliders. Three lightest supersymmetric particle (LSP) candidates exist: the W-ino, the stau, and the tau sneutrino. For the W-ino LSP scenario, light W-ino triplets with the smallest possible mass splittings are preferred; such W-inos are within reach of run II Fermilab Tevatron searches. Finally, we study a variety of sensitive low energy probes, including b{yields}s{gamma}, the anomalous magnetic moment of the muon, and the electric dipole moments of the electron and neutron. (c) 2000 The American Physical Society.