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arXiv 1009.0177hep-ph
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在非标准超对称谱情况下超对称味问题能解耦吗?

Can the Supersymmetric Flavour Problem decouple in case of a Non Standard Supersymmetric Spectrum?

Paolo Lodone

摘要:

已经证明,在MSSM的背景下,超对称味问题不能仅仅通过让前两代的sfermions相对较重来解决。原因是双重的:一方面是费米尺度的自然性,另一方面是需要正平方的停止质量。在没有轻希格斯玻色子玻色子的模型中,情况要乐观得多,在这种模型中,目标可以达到。价格是:一个相对较低的信使规模,半微扰性之前的大统一体规模,和一些数量的简并/Cabibbo角的顺序在sfermion部门。增加的四次耦合起着至关重要的作用。由此产生的现象学在许多方面与MSSM现象学有很大的不同。

英文摘要:

It has been shown that, in the context of the MSSM, the Supersymmetric Flavour Problem cannot be solved by just letting the sfermions of the first two generations be relatively heavy. The reason is twofold: naturalness of the Fermi scale on one side, need for positive squared stop masses on the other. The situation is much more promising in models without a light Higgs boson, in which the goal can be met. The prices are: a relatively low messenger scale, semiperturbativity before the GUT scale, and some amount of degeneracy/alignement of order of the Cabibbo angle in the sfermion sector. A crucial role is played by the increased quartic coupling. The resulting phenomenology is quite different from the MSSM one in many respects.

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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