在重子数破坏重标量框架下重新诠释ATLAS双喷注与超对称搜索
Reinterpreting ATLAS Dijet and Supersymmetry Searches in A Baryon-Number-Violating Heavy Scalar Framework
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中文总结 AI 辅助
利用ATLAS 13 TeV数据重新诠释b标记双喷注和单顶搜索，约束重子数破坏标量模型，在λ₁-λ₂平面给出95%置信水平排除极限。
中文摘要 AI 辅助
本文基于质心能量为13 TeV的pp碰撞数据，对应积分亮度为139 fb⁻¹，对ATLAS针对b标记双喷注共振和类单顶（monotop）信号的搜索进行了重新诠释。这些搜索被用于约束一个重子数破坏的新物理模型，该模型引入两个标量中介粒子X₁和X₂，以同时解释宇宙的重子不对称性和暗物质剩余丰度。通过利用重味标记特征并允许富含喷注的末态，该重新诠释相对于未进行味标记的包容性双喷注搜索和常规单顶重新诠释，提供了对该模型的互补灵敏度。假设中介粒子衰变为一对下型夸克，或衰变为一个顶夸克和一个暗物质候选粒子，我们将实验上限转换到模型的参数空间中。在基准中介粒子质量为1.5、1.75和2.0 TeV时，推导了λ₁-λ₂耦合平面上的95%置信水平排除极限。对于所有三个基准质量，b标记双喷注重新诠释排除了λ₁ > 0.45的区域，而底夸克（bottom-squark）重新诠释在各自验证的参数域内排除了λ₁ > 0.3且λ₂ > 0.6的区域。
英文摘要
A reinterpretation of ATLAS searches targeting $b$-tagged dijet resonances and monotop-alike signatures at a center-of-mass energy of 13 TeV is presented using $pp$ collision data corresponding to integrated luminosities of 139 $\mathrm{fb}^{-1}$. These searches are used to constrain a baryon-number-violating new physics model that introduces two scalar mediators $X_{1}$ and $X_{2}$ to simultaneously address the baryon asymmetry of the universe and the dark matter relic abundance. By exploiting heavy-flavor signatures and allowing for jet-rich final states, this reinterpretation provides complementary sensitivity to the model relative to non-flavor-tagged inclusive dijet searches and conventional monotop reinterpretations. Assuming the mediators decay either into a pair of down-type quarks or into a top quark and a dark matter candidate, we translate the experimental upper limits into the model's parameter space. 95% confidence level exclusion limits are derived in the $λ_1$-$λ_2$ coupling plane for benchmark mediator masses of 1.5, 1.75, and 2.0 TeV. For all three benchmark masses, the $b$-tagged dijet reinterpretation excludes $λ_1 > 0.45$, while the bottom-squark reinterpretation excludes the region with $λ_1 > 0.3$ and $λ_2 > 0.6$, within the respective validated parameter domains.
发表机构
- Vanderbilt University（范德堡大学）
机构由 AI 辅助整理，请以论文原文为准。
