Gravitational waves as a probe of SUSY scale
Gravitational waves as a probe of SUSY scale
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引力波作为 SUSY 尺度的探测器
DOI：
10.1103/physrevd.91.063529
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发表时间：
2015
影响因子：
5
通讯作者：
A. Kamada and M. Yamada
中科院分区：
文献类型：
--
作者：
M. Kawasaki;M. Yamada;T. T. Yanagida and N. Yokozaki;A. Kamada and M. Yamada
我们调查了超对称理论中平坦方向的哈勃诱导质量的来源，并表明哈勃诱导质量的符号通常在膨胀结束后发生变化。这意味着，在包括最小超对称标准模型在内的各种超对称模型中，整体宇宙弦通常在暴胀结束后形成。宇宙弦发出的引力波的频率对应于哈勃尺度，直到当哈勃参数下降到平坦方向的软质量时，它们才消失。结果表明，引力波的峰值频率与超对称尺度有关。对这种引力波信号的观测，结合对撞机实验和暗物质搜索的结果，可以产生超光速破坏参数的信息。
We investigate the sources of the Hubble-induced mass for a flat direction in supersymmetric theories and show that the sign of the Hubble-induced mass generally changes just after the end of inflation. This implies that global cosmic strings generally form after the end of inflation in a wide class of supersymmetric models, including the minimal supersymmetric Standard Model. The cosmic strings emit gravitational waves whose frequency corresponds to the Hubble scale, until they disappear when the Hubble parameter decreases down to the soft mass of the flat direction. As a result, the peak frequency of gravitational waves is related to the supersymmetric scale. The observation of this gravitational wave signal, in conjunction with results from collider experiments and dark matter searches, can yield information of supersymmetry-breaking parameters.