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arXiv 0812.3213hep-thhep-ph
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SQCD的亚稳超对称破缺和多迹形变

Metastable supersymmetry breaking and multitrace deformations of SQCD

Rouven Essig, Jean-Francois Fortin, Kuver Sinha, Gonzalo Torroba, Matthew J. Strassler

摘要:

探讨了超对称QCD中存在超势单迹和多迹形变时的亚稳真空,目的是得到一种可接受的唯象。亚稳真空出现在一个环中,具有破缺的R对称性,以及完全希格斯的磁规范群。在只有一个迹线变形的情况下,介子超场的伴随费米子在一个圈处近似无质量,即使它们在树水平上有质量并且R对称性破缺。因此,如果在标准模型下充电,它们是不可接受的轻。多迹二次变形产生的费米子质量与变形参数成正比。唯象可行的直接规范调解模型,然后可以得到,他们的一些特点进行了讨论。

英文摘要:

Metastable vacua in supersymmetric QCD in the presence of single and multitrace deformations of the superpotential are explored, with the aim of obtaining an acceptable phenomenology. The metastable vacua appear at one loop, have a broken R-symmetry, and a magnetic gauge group that is completely Higgsed. With only a single trace deformation, the adjoint fermions from the meson superfield are approximately massless at one loop, even though they are massive at tree level and R-symmetry is broken. Consequently, if charged under the standard model, they are unacceptably light. A multitrace quadratic deformation generates fermion masses proportional to the deformation parameter. Phenomenologically viable models of direct gauge mediation can then be obtained, and some of their features are discussed.

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