论文标题
非线性MSSM中的Higgs-Portal暗物质
Higgs-Portal Dark Matter in Nonlinear MSSM
论文作者
论文摘要
标准模型（SM）的超对称（SUSY）扩展是SM以外的新物理学的主要候选者。例如，如果Susy Breaking量表非常低，例如，多型TEV范围和Susy Breaking部门（Goldstino（Gravitino）除外，都与低能能源谱相结合，则通过将NILILPOTENT $ x^2 = 2 = 0的条件很好地描述了最小的Susy SMS（MSSM）中的隐藏扇区效应。尽管这种所谓的“非线性MSSM”（NL-MSSM）提供了各种有趣的现象，但存在一个宇宙学的问题，即最轻的超级助手Gravitino太轻而无法成为我们宇宙中暗物质（DM）的主要组成部分。为了解决这个问题，我们通过引入Parity-odd Sm Singlet手性超级场（$φ$）来提出NL-MSSM的最小扩展。我们表明，在消除了Goldstino Superfield的F组件和$φ$中最轻的真实标量后，引起了$φ$中标量组件与MSSM HIGGS双重组的相互作用。有了合适的模型参数选择，可以通过Multi-tev Susy破裂效果从树级希格斯的潜力中实现成功的Higgs-Portal DM场景，同时从树级希格斯的潜力中实现Smlike Higgs玻色子质量。
Supersymmetric (SUSY) extension of the Standard Model (SM) is a primary candidate for new physics beyond the SM. If SUSY breaking scale is very low, for example, the multi-TeV range, and the SUSY breaking sector, except for the goldstino (gravitino), is decoupled from the low energy spectrum, the hidden sector effect in the minimal SUSY SM (MSSM) is well described by employing the goldstino chiral superfield ($X$) with the nilpotent condition of $X^2=0$. Although this so-called "nonlinear MSSM" (NL-MSSM) provides a variety of interesting phenomenologies, there is a cosmological problem that the lightest superpartner gravitino is too light to be the major component of the dark matter (DM) in our universe. To solve this problem, we propose a minimal extension of the NL-MSSM by introducing a parity-odd SM singlet chiral superfield ($Φ$). We show that the interaction of the scalar component in $Φ$ with the MSSM Higgs doublets is induced after eliminating F-component of the goldstino superfield and the lightest real scalar in $Φ$ plays the role of the Higgs-portal DM. With a suitable choice of the model parameters, a successful Higgs-portal DM scenario can be realized while achieving the SM-like Higgs boson mass of 125 GeV from the tree-level Higgs potential through the multi-TeV SUSY breaking effect.
