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arXiv 1102.1589hep-ph
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质量总和规则与信使量表在一般规范中介中的作用

Mass Sum Rules and the Role of the Messenger Scale in General Gauge Mediation

Joerg Jaeckel, Valentin V. Khoze, Chris Wymant

摘要:

在一般规范中介(GGM)中,超对称破缺通过高尺度的规范相互作用传递到标准模型(MSSM)部门,我们称之为信使尺度。在这个尺度上,GGM预测了MSSM sfermion质量之间的某些求和规则。我们调查的有效性和最终的命运,这些总和规则后,RG演变到电弱规模的质谱将在对撞机探测。我们发现,和规则的前两代。然而,第三代(其中sfermions是最轻的)违反了10至50%的两个总和规则之一,在探索的参数空间。这限制并量化了求和规则作为规范中介签名的潜在用途。我们还评论的信使规模在单尺度和多尺度GGM模型中所发挥的作用。

英文摘要:

In General Gauge Mediation (GGM), supersymmetry breaking is communicated to the Standard Model (MSSM) sector via gauge interactions at a high scale which we refer to as the messenger scale. At this scale GGM predicts certain sum rules between the MSSM sfermion masses. We investigate the validity and the ultimate fate of these sum rules after RG evolution down to the electroweak scale where the mass spectrum will be probed at colliders. We find that the sum rules hold for the first two generations. However the third generation (where sfermions are lightest) violates one of the two sum rules by 10 to 50% over the explored parameter space. This constrains and quantifies the potential use of sum rules as a signature of gauge mediation. We also comment on the role played by the messenger scale in single- and multi-scale GGM models.

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