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arXiv 2112.02477hep-phhep-exnucl-ex
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在EIC上寻找类轴子粒子

Searching for the axion-like particle at the EIC

Yandong Liu, Bin Yan

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5 pages, 5 figures, published version
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摘要：

类轴子粒子（axion-like particle，ALP）是一种新的有望超越标准模型的粒子。在这项工作中，我们建议探测ALP通过光子聚变散射在即将到来的电子-离子对撞机（EIC）与电子和质子能量$E_e=20~{\rm GeV}$和$E_p=250~{\rm GeV}$。结果表明，对于$m_a\in [5,40]~{\rm GeV}$质量范围，利用$300~{\rm fb}^{-1}$的积分亮度，可以在$2σ$置信水平下将ALP与光子的有效耦合强度约束为$0.2~{\rm TeV}^{-1}$.如果我们考虑EIC处的核束，这种束缚可以得到很大的改善。我们还表明，从EIC的限制可能是强于关闭$Z$极测量在LEP和光的光散射与pp碰撞在LHC。

英文摘要：

The axion-like particle (ALP) is a well motivated new particle candidate of beyond the Standard Model. In this work, we propose to probe the ALP through the photon fusion scattering at the upcoming Electron-Ion Collider (EIC) with electron and proton energy $E_e=20~{\rm GeV}$ and $E_p=250~{\rm GeV}$. It shows that we could constrain the effective coupling strength between ALP and photons to be $0.2~{\rm TeV}^{-1}$ at $2σ$ confidence level with the integrated luminosity of $300~{\rm fb}^{-1}$ for the mass range $m_a\in [5,40]~{\rm GeV}$. Such bound could be much improved if we consider the nucleus beam at the EIC. We also demonstrate that the limits from the EIC could be stronger than the off $Z$-pole measurement at the LEP and the Light-by-Light scattering with pp collision at the LHC.

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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