H→Zγ→f̄fγ衰变中的正反不对称性
Forward-backward asymmetry in the $H\to Zγ\to\overline{f}{f}γ$ decay
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中文总结 AI 辅助
该论文研究H→Zγ→f̄fγ衰变中的正反不对称性,利用LHC测量推导CP破坏形状因子h₃^{Zγ}的约束,发现不对称性可达10⁻¹量级,或可在HL-LHC中观测。
中文摘要 AI 辅助
我们研究由HZγ顶点的复形状因子诱导的三体衰变过程H→Zγ→f̄fγ中的正反不对称性。为估算其大小,利用当前LHC测量结果推导CP破坏形状因子h₃^{Zγ}的实部与虚部约束,得到约0.9 GeV的上限。这些界限与电偶极矩(EDM)推导的量级相同。我们发现该不对称性可达10⁻¹量级,在高亮度LHC(HL-LHC)中或许可观测。
英文摘要
We study the forward-backward asymmetry in the three-body decay process $H\to Zγ\to\overline{f}fγ$, induced by complex form factors in the $HZγ$ vertex. To estimate its magnitude, we derive constraints on the real and imaginary parts of the $CP$-violating form factor $h_3^{Zγ}$ using current LHC measurements, obtaining upper limits of about $0.9$ GeV. These bounds are of the same order of magnitude as those derived from electric dipole moments (EDM). We find that the asymmetry can reach values of order $10^{-1}$ and may be accessible at the HL-LHC.
发表机构
- Benemérita Universidad Autónoma de Puebla(普埃布拉自治英雄大学)
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