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arXiv 1108.2402hep-phhep-ex
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非反常离散R对称性、额外物质和锂离子SUSY希格斯质量的增强

Non-anomalous Discrete R-symmetry, Extra Matters, and Enhancement of the Lightest SUSY Higgs Mass

Masaki Asano, Takeo Moroi, Ryosuke Sato, Tsutomu T. Yanagida

摘要:

考虑具有非反常离散R-对称性的低能超对称模型。在这样的模型中,为了使R对称性非反常,具有规范量子数的新粒子不可避免地要加入到最小超对称标准模型(MSSM)的粒子内容中。这些新粒子可能与希格斯玻色子耦合,导致最轻希格斯质量的显著增强。我们表明,在这样的模型中,最轻的希格斯质量可以远远大于MSSM上限;最轻的希格斯质量大到140 GeV(或更大)成为可能。

英文摘要:

We consider low-energy supersymmetric model with non-anomalous discrete R-symmetry. In such a model, to make the R-symmetry non-anomalous, new particles with gauge quantum numbers should be inevitably added to the particle content of the minimal supersymmetric standard model (MSSM). Those new particles may couple to the Higgs boson, resulting in a significant enhancement of the lightest Higgs mass. We show that, in such a model, the lightest Higgs mass can be much larger than the MSSM upper bound; the lightest Higgs mass as large as 140 GeV (or larger) becomes possible.

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