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arXiv 1503.06475hep-ph
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从LEP和ILC实验看标量暗物质

Scalar Dark Matter in light of LEP and ILC Experiments

F. Rossi-Torres, C. A. Moura

摘要:

在这项工作中,我们研究的标量场暗物质模型的质量为100 MeV的顺序。我们假设暗物质是在$e^-+e^+\to ϕ+ϕ^*+γ$过程中产生的,事实上,这可能是LEP广泛研究的标准过程$e^-+e^+\to ν+\barν+γ$的背景。我们约束的手性耦合,$C_L$和$C_R$,暗物质与电子通过一个中间费米子的质量$m_F=100$ GeV,并获得$C_L=0.1(0.25)$和$C_R=0.25(0.1)$为我们的$χ^2$分析的最佳拟合点。我们还分析了ILC的潜力,以检测这个标量暗物质的两种配置:(i)质量中心的能量$\sqrt{s}=500$ GeV和光度$\mathcal{L}=250$ FB $^{-1}$,和(ii)质量中心的能量$\sqrt{s}=1$ TeV和光度$\mathcal{L}=500$ FB $^{-1}$。为了更好地研究手征耦合,还研究了偏振光束的差异。

英文摘要:

In this work we study a scalar field dark matter model with mass of the order of 100 MeV. We assume dark matter is produced in the process $e^-+e^+\to ϕ+ϕ^*+γ$, that, in fact, could be a background for the standard process $e^-+e^+\to ν+\barν+γ$ extensively studied at LEP. We constrain the chiral couplings, $C_L$ and $C_R$, of the dark matter with electrons through an intermediate fermion of mass $m_F=100$ GeV and obtain $C_L=0.1(0.25)$ and $C_R=0.25(0.1)$ for the best fit point of our $χ^2$ analysis. We also analyze the potential of ILC to detect this scalar dark matter for two configurations: (i) center of mass energy $\sqrt{s}=500$ GeV and luminosity $\mathcal{L}=250$ fb$^{-1}$, and (ii) center of mass energy $\sqrt{s}=1$ TeV and luminosity $\mathcal{L}=500$ fb$^{-1}$. The differences of polarized beams are also explored to better study the chiral couplings.

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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