Soft masses in theories with supersymmetry breaking by TeV compactification

被引:226
作者
Antoniadis, I [1 ]
Dimopoulos, S
Pomarol, A
Quirós, M
机构
[1] Ecole Polytech, Ctr Phys Theor, CNRS, UMR 7644, F-91128 Palaiseau, France
[2] Stanford Univ, Dept Phys, Stanford, CA 94309 USA
[3] CERN, Div TH, CH-1211 Geneva, Switzerland
[4] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain
基金
美国国家科学基金会;
关键词
D O I
10.1016/S0550-3213(99)00037-1
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We study the sparticle spectroscopy and electroweak breaking of theories where supersymmetry is broken by compactification (Scherk-Schwarz mechanism) at a TeV. The evolution of the soft terms above the compactification scale and the resulting sparticle spectrum are very different from those of the usual MSSM and gauge-mediated theories, This is traced to the softness of the Scherk-Schwarz mechanism which leads to scaler sparticle masses that are only logarithmically sensitive to the cutoff starting at two loops. As a result, the mass-squareds of the squarks and sleptons are a loop factor smaller than those of the gauginos. In addition, the mechanism is very predictive and the sparticle spectrum depends on just two new parameters. A significant advantage of this mechanism relative to gauge mediation is that a Higgsino mass mu similar to M-susy is automatically generated when supersymmetry is broken. Our analysis applies equally well to theories where the cutoff is near a TeV or M-Pl or some intermediate scale. We also use these observations to show how we may obtain compactification radii which are hierarchically larger than the fundamental cutoff scale. (C) 1999 Elsevier Science B.V.
引用
收藏
页码:503 / 519
页数:17
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