arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2603.06162hep-ph
收藏

在CP破坏的NB-LSSM中希格斯玻色子

The Higgs boson in the CP-violating NB-LSSM

Departamento de Física and CFTP, Instituto Superior Técnico, Universidade de Lisboa(里斯本大学高等技术学院物理系和葡萄牙科学技术中心);Department of Physics, Chongqing University(重庆大学物理学院)

Xing-Xing Dong, Wen-Hui Zhang, Cai Guo, Shu-Min Zhao, Tai-Fu Feng

AI总结:

在CP破坏的NB-LSSM中,研究希格斯玻色子的质量和信号强度,分析CP破坏参数对理论预测的影响。

摘要:

本研究探讨了在CP破坏的下一最小B-L超对称模型(NB-LSSM)中约95 GeV(仅为假设场景)和125 GeV的最轻和第二轻的希格斯玻色子。在NB-LSSM中,希格斯势中的CP破坏会导致CP偶极和CP奇极希格斯场之间的混合质量项。因此,必须考虑中性希格斯玻色子的(10×10)维质量矩阵。这些潜在的混合效应可能会导致中性希格斯玻色子质量产生剧烈变化。此外,NB-LSSM预测的中性希格斯玻色子可能相互强烈混合,从而显著修改希格斯玻色子与费米子或规范玻色子的耦合。发现NB-LSSM中的特定参数g_YB、tanβ、T_κ、T_λ等以及CP破坏相位θ_{1,2,3,4,6,7,8}显著影响对希格斯玻色子质量及相应信号强度的理论预测。并且,对标准模型类似希格斯衰变通道和约95 GeV的过剩信号的理论预测与观测实验数据拟合良好。

英文摘要:

This study investigates the lightest and second-lightest Higgs bosons at around 95 GeV (which is only a hypothetical scenario) and 125 GeV respectively within the CP-violating next to minimum B-L supersymmetric model(NB-LSSM). In the NB-LSSM, the CP violation in the Higgs potential leads to the mixing mass terms between the CP-even and CP-odd Higgs fields. Thus, one has to consider a $(10 \times 10)$-dimensional mass matrix for the neutral Higgs boson. These potential mixing effects may lead to drastic variations on the neutral Higgs boson masses. Besides, the neutral Higgs bosons predicted in the NB-LSSM may strongly mix with one another, thereby significantly modifying the couplings of the Higgs bosons to the fermions or gauge bosons. It is found that the specific parameters $g_{YB}$, $\tanβ$, $T_κ$, $T_λ, \cdot\cdot\cdot$ and CP-violating phases $θ_{1,2,3,4,6,7,8}$ in the NB-LSSM affect the theoretical predictions on the Higgs boson mass and corresponding signal strengthes significantly. And the theoretical predictions on the signal strengthes of SM-like Higgs decay channels and excess signals at around 95 GeV are fitted well to the observed experimental data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑