在本研究中，我們利用大型強子對撞機（LHC）在√s=14TeV的對撞能量下，評估了類軸子粒子（ALP）的gaWW耦合靈敏度，其中亮度設定為L=300fb−1（當前運行）和L=3000fb−1（預期的未來高亮度）。通過在MadGraph5aMC@NLO上模擬pp→W±a(W±→l±νl),(a→γγ)過程，並使用了特定的參數集：fa=1TeV、CWW=2、CBB=1和Cg=gaf=0。為了更好區分信號和背景，我們對Ma>25GeV和Ma≤25GeV分別建立了選擇標準。結果表明，在1GeV<Ma<100GeV的ALP質量範圍內，我們將gaWW的靈敏度提高到了10−4GeV−1的水平，與現有限制相比，大約提高了一到兩個數量級。

In this study, we evaluated the sensitivity of the gaWW coupling for the axion-like particle (ALP) using the LHC at a center-of-mass energy of √s=14TeV, with luminosities set at L=300fb−1 (current operation) and L=3000fb−1 (anticipated future high luminosity). Simulating the process pp→W±a(W±→l±νl),(a→γγ) on the MadGraph5aMC@NLO, we utilized a specific parameter set: fa=1TeV, CWW=2, CBB=1 and Cg=gaf=0. To better differentiate between signal and background, we established selection criteria separately for Ma>25GeV and Ma≤25GeV. The results indicate that, in the ALP mass range 1GeV<Ma<100GeV, we improved the sensitivity of gaWW to the level of 10−4GeV−1, representing an enhancement of approximately one to two orders of magnitude compared to existing limits.

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