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arXiv 1306.0279hep-ph
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在ILC上MSSM和NMSSM中125 GeV希格斯玻色子的成对产生

Pair production of a 125 GeV Higgs boson in MSSM and NMSSM at the ILC

Zhaoxia Heng, Liangliang Shang, Peihua Wan

摘要:

在这项工作中,我们研究了在MSSM和NMSSM的ILC的光子-光子碰撞的Higgs对的生产。我们考虑各种实验约束和扫描的参数空间的MSSM和NMSSM。然后我们在允许的参数空间中计算了Higgs对产生的截面,并将计算结果与SM中的预言进行了比较。我们发现MSSM中截面的大幅度增强主要是由于stau介导的环的贡献,而NMSSM中主要是由于顶夸克环的贡献。对于轻的$m_{\tildeτ_1}$和大的$μ\tanβ$,在MSSM中生产率可以提高18倍(相对于SM预测)。对于大的三线性软断裂参数$A_t$和中等轻的顶鸣,它也可以在NMSSM中增强2倍。此外,我们还计算了$χ^2$值与LHC Higgs数据和显示结果的参数空间与$χ^2$优于SM值。

英文摘要:

In this work we investigate the Higgs pair production in the MSSM and NMSSM at the photon-photon collision of the ILC. We consider various experimental constraints and scan over the parameter space of the MSSM and NMSSM. Then we calculate the cross section of Higgs pair production in the allowed parameter space and compare the results with the predictions in the SM. We find that the large enhancement of the cross section in the MSSM is mainly due to the contributions from the loops mediated by the stau, while in the NMSSM it is mainly due to the contributions from the top-squark loops. For light $m_{\tildeτ_1}$ and large $μ\tanβ$, the production rate can be enhanced by a factor of 18 in the MSSM (relative to the SM prediction). And for a large trilinear soft breaking parameter $A_t$ and a moderately light top-squark, it can also be enhanced by a factor of 2 in the NMSSM. Moreover, we also calculate the $χ^2$ values with the LHC Higgs data and display the results for the parameter space with $χ^2$ better than the SM value.

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。

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