标题： 复数NMSSM中希格斯玻色子质量的一环水平 显示英文标题

标题： Higgs Boson Masses in the Complex NMSSM at One-Loop Level

摘要： 下一最小超对称标准模型（NMSSM）具有包含五个中性希格斯玻色子和两个带电希格斯玻色子的希格斯场，允许丰富的现象学。此外，大量的参数提供了许多CP破坏的来源。与最小超对称扩展不同，希格斯场中的CP破坏在树图层次上已经可能。为了可靠地理解和解释希格斯玻色子搜索的实验结果，并正确区分由标准模型或可能的扩展提供的希格斯场，希格斯玻色子质量必须尽可能精确地已知，包括高阶修正。在本文中，我们采用基于实轴和$\bar{DR}$条件的混合重整化方案，通过费曼图方法计算复数NMSSM中中性希格斯玻色子质量的一圈修正。我们研究了各种情景，在这些情景中，我们允许希格斯场中的树图层次CP破坏相位，并且还研究了由于停止子场中三线耦合$A_t$的非零相位引起的辐射诱导CP破坏。发现这些对希格斯玻色子现象学有显著影响。此外，我们通过改变顶夸克和底夸克质量的重整化方案以及采用不同的重整化尺度来估计由于未知高阶修正带来的理论误差。剩余的理论误差可估计约为10%。 显示英文摘要

摘要： The Next-to-Minimal Supersymmetric Extension of the Standard Model (NMSSM) with a Higgs sector containing five neutral and two charged Higgs bosons allows for a rich phenomenology. In addition, the plethora of parameters provides many sources of CP violation. In contrast to the Minimal Supersymmetric Extension, CP violation in the Higgs sector is already possible at tree-level. For a reliable understanding and interpretation of the experimental results of the Higgs boson search, and for a proper distinction of Higgs sectors provided by the Standard Model or possible extensions, the Higgs boson masses have to be known as precisely as possible including higher-order corrections. In this paper we calculate the one-loop corrections to the neutral Higgs boson masses in the complex NMSSM in a Feynman diagrammatic approach adopting a mixed renormalization scheme based on on-shell and $\bar{DR}$ conditions. We study various scenarios where we allow for tree-level CP-violating phases in the Higgs sector and where we also study radiatively induced CP violation due to a non-vanishing phase of the trilinear coupling $A_t$ in the stop sector. The effects on the Higgs boson phenomenology are found to be significant. We furthermore estimate the theoretical error due to unknown higher-order corrections by both varying the renormalization scheme of the top and bottom quark masses and by adopting different renormalization scales. The residual theoretical error can be estimated to about 10%.