arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.05928hep-ex
收藏

用ATLAS探测器在$\sqrt{s}=13$ TeV上寻找$pp$碰撞中衰变成光子和强子衰变希格斯玻色子的重共振

Search for heavy resonances decaying into a photon and a hadronically decaying Higgs boson in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS Collaboration

摘要:

这封信提出了一个新的重共振的产生的搜索衰变为希格斯玻色子和光子使用质子-质子碰撞数据收集的$\sqrt{s}=13$ TeV的ATLAS探测器在大型强子对撞机。该数据对应于139 fb $^{-1}$的积分亮度。分析是通过重建强子衰变的希格斯玻色子$(H\to b\bar{b})$候选作为单一的大半径喷流。本文提出了一种利用喷流质心系中的喷流成分信息来识别单喷流中两个$b$夸克的新算法。未观察到显著超出预期背景的事件。上限被设置在窄自旋-1共振衰变成希格斯玻色子和光子的共振质量范围从0.7到4 TeV的生产截面乘以分支分数,截面乘以分支分数被排除在11.6 fb和0.11 fb之间,在95%的置信水平。

英文摘要:

This Letter presents a search for the production of new heavy resonances decaying into a Higgs boson and a photon using proton-proton collision data at $\sqrt{s}=13$ TeV collected by the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 139 fb$^{-1}$. The analysis is performed by reconstructing hadronically decaying Higgs boson $(H\to b\bar{b})$ candidates as single large-radius jets. A novel algorithm using information about the jet constituents in the center-of-mass frame of the jet is implemented to identify the two $b$-quarks in the single jet. No significant excess of events is observed above the expected background. Upper limits are set on the production cross-section times branching fraction for narrow spin-1 resonances decaying into a Higgs boson and a photon in the resonance mass range from 0.7 to 4 TeV, cross-sections times branching fraction are excluded between 11.6 fb and 0.11 fb at a 95% confidence level.

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。

↑