Search for tb resonances in proton-proton collisions at vs=7 TeV with the ATLAS detector.
Search for tb resonances in proton-proton collisions at vs=7 TeV with the ATLAS detector.
复制标题
使用 ATLAS 探测器在 vs=7 TeV 处搜索质子-质子碰撞中的 tb 共振。
DOI：
10.1103/physrevlett.109.081801
复制
发表时间：
2012
影响因子：
8.6
通讯作者：
Aad G
中科院分区：
文献类型：
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作者：
Aad G
这封信介绍了 ATLAS 探测器在 7 TeV 质心能量下收集的 LHC 质子-质子碰撞数据中的共振搜索。选择具有轻子、缺失横向动量和两个喷流的事件，并重建相应最终状态的不变质量。该搜索利用与预期标准模型背景相比的不变质量分布的形状。选择具有标准模型类联轴器的右手模型作为本次搜索的基准模型。数据中没有观察到统计上显着的过量事件，并且横截面的上限乘以 95% C.L. 处的共振分支比。其质量范围为 6.1–1.0 pb，范围为 0.5 至 2.0 TeV。这些限制转化为允许的右手质量的下限，即 95% C.L.
This Letter presents a search forresonances inof LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected and the invariant mass of the corresponding final state is reconstructed. The search exploits the shape of theinvariant mass distribution compared to the expected standard model backgrounds. The model of a right-handedwith standard model-like couplings is chosen as the benchmark model for this search. No statistically significant excess of events is observed in the data, and upper limits on the cross section times the branching ratio ofresonances at 95% C.L. lie in the range of 6.1–1.0 pb formasses ranging from 0.5 to 2.0 TeV. These limits are translated into a lower bound on the allowed right-handedmass, givingat 95% C.L.