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arXiv 1606.04782hep-ex
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用ATLAS探测器在$\sqrt{s} = 13$ TeV上用质子-质子碰撞寻找$b\bar{b}b\bar{b}$末态希格斯玻色子对的产生

Search for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using proton--proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS Collaboration

摘要:

利用ATLAS探测器在$\sqrt{s} = 13$ TeV收集的3.2 fb $^{-1}$质子-质子碰撞数据,对$b\bar{b}b\bar{b}$末态中Higgs玻色子对的产生进行了研究.这些数据与估计的背景是一致的,并用于设置上限的生产截面的希格斯玻色子对倍分支比$b\bar{b}b\bar{b}$的非共振和共振生产。在共振生产的卡鲁扎-克莱因引力子在兰德尔-Sundrum模型的情况下,上限在24至91 fb的范围内获得的质量在600和3000 GeV之间,在95%的置信水平。在95%的置信水平下,非共振希格斯玻色子对的产生截面乘以分支比也被限制为小于1.22 pb。

英文摘要:

A search for Higgs-boson pair production in the $b\bar{b}b\bar{b}$ final state is carried out with 3.2 fb$^{-1}$ of proton--proton collision data collected at $\sqrt{s} = 13$ TeV with the ATLAS detector. The data are consistent with the estimated background and are used to set upper limits on the production cross section of Higgs-boson pairs times branching ratio to $b\bar{b}b\bar{b}$ for both nonresonant and resonant production. In the case of resonant production of Kaluza--Klein gravitons within the Randall--Sundrum model, upper limits in the 24 to 91 fb range are obtained for masses between 600 and 3000 GeV, at the 95% confidence level. The production cross section times branching ratio for nonresonant Higgs-boson pairs is also constrained to be less than 1.22 pb, at the 95% confidence level.

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