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arXiv 1111.3455hep-ph
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重新审视无尺度超引力激发的场景

Revisiting No-Scale Supergravity Inspired Scenarios

Amine Benhenni, Jean-Loïc Kneur, Gilbert Moultaka, Sean Bailly

摘要:

我们认为无尺度超引力启发的情况下,强调可能的动力学确定的软超重力打破参数所触发的辐射校正,解除基本上平坦的树级潜在的隐藏部门。我们(重新)强调所发挥的重要作用的尺度依赖的真空能量的贡献的有效潜力的发生一致的无标度极小。最相关的输入参数引入$B_0$(软破断混合希格斯参数)和$η_0$(宇宙学常数值在高能量),而不是$\mhalf$和$\tan β$,后者是通过(广义)电位最小化在电弱尺度。我们研究的理论和现象学的可行性,这样一个机制时,面对最新的计算的低能量sparticle光谱和目前的限制从大型强子对撞机和其他观测。紧暗物质遗迹密度约束的中性子LSP的情况下,可以大大放宽引力子LSP的情况下,在这个框架中可能的。

英文摘要:

We consider no-scale supergravity inspired scenarios, emphasizing the possible dynamical determination of the soft supersymmetry-breaking parameters as triggered by the radiative corrections that lift an essentially flat tree-level potential in the hidden sector. We (re)emphasize the important role played by the scale-dependent vacuum energy contribution to the effective potential for the occurrence of consistent no-scale minima. The most relevant input parameters are introduced as $B_0$ (the soft breaking mixing Higgs parameter) and $η_0$ (the cosmological constant value at high energy) instead of $\mhalf$ and $\tan β$, the latter being determined through a (generalized) potential minimization at electroweak scales. We examine the theoretical and phenomenological viability of such a mechanism when confronted with up-to-date calculations of the low energy sparticle spectrum and with present constraints from the LHC and other observables. The tight dark matter relic density constraint for a neutralino LSP scenario can be considerably relaxed for a gravitino LSP scenario possible in this framework.

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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