论文标题
在$ \ ell^+\ ell^ - \ ell'^+el'^+el'^ - $和$ \ el^+^+el^+\ ell^+\ ell^-cbarν$最终状态使用139 fb $^{-1}
Search for heavy resonances decaying into a pair of $Z$ bosons in the $\ell^+\ell^-\ell'^+\ell'^-$ and $\ell^+\ell^-ν\barν$ final states using 139 fb$^{-1}$ of proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
论文作者
论文摘要
搜索沉重的共振衰减成一对$ z $玻色子，导致$ \ ell^+\ ell^ - \ ell'^+\ ell'^ - $和$ \ ell^+\ ell^+\ ell^ell^-cbarν$ final States，其中$ \ ell $ spes in a electron或a muon as a a muon or a a muon as a a a muon cashessed出现。该搜索在2015年至2018年收集的13个TEV的质子 - 质子碰撞数据中使用，与Atlas检测器在大型Handron Collider的2次运行期间记录的139 fb $^{ - 1} $的完整集成光度相对应。根据最终状态和模型，考虑了假设共振的不同质量范围，涉及2000 GEV至2000 GEV的假设共振。在没有明显观察到的过量的情况下，结果被解释为Spin-0或Spin-2共振的生产横截面上的上限。 Spin-0共振的上限被转化为在I型和II型两-higgs-doublet模型的背景下的排除轮廓，并且使用Spin-2共振的极限用于限制randall-sundrum模型，其额外的尺寸会引起Spin-2 Graviton兴奋。
A search for heavy resonances decaying into a pair of $Z$ bosons leading to $\ell^+\ell^-\ell'^+\ell'^-$ and $\ell^+\ell^-ν\barν$ final states, where $\ell$ stands for either an electron or a muon, is presented. The search uses proton-proton collision data at a centre-of-mass energy of 13 TeV collected from 2015 to 2018 that corresponds to the full integrated luminosity of 139 fb$^{-1}$ recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. Different mass ranges spanning 200 GeV to 2000 GeV for the hypothetical resonances are considered, depending on the final state and model. In the absence of a significant observed excess, the results are interpreted as upper limits on the production cross section of a spin-0 or spin-2 resonance. The upper limits for the spin-0 resonance are translated to exclusion contours in the context of Type-I and Type-II two-Higgs-doublet models, and the limits for the spin-2 resonance are used to constrain the Randall--Sundrum model with an extra dimension giving rise to spin-2 graviton excitations.
