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arXiv 1311.2006hep-ex
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用sqrt(s)= 8的质子-质子碰撞和ATLAS探测器寻找高不变质量轻子+喷流末态的量子黑洞产生

Search for Quantum Black-Hole Production in High-Invariant-Mass Lepton+Jet Final States Using Proton-Proton Collisions at sqrt(s) = 8 TeV and the ATLAS Detector

ATLAS Collaboration

摘要:

这封信提出了一个搜索量子黑洞的生产使用20.3反fb的数据收集与ATLAS探测器在pp碰撞在LHC在sqrt(s)= 8 TeV。量子黑洞被假定衰变为轻子(电子或μ子)和喷流。在这两个通道中,没有观察到轻子喷流不变质量为3.5 TeV或更大的事件,与预期的背景一致。限制的产品上的截面和分支分数的轻子+喷流的最终状态的量子黑洞中产生的搜索区域的不变质量超过1 TeV。对于阈值质量高于3.5 TeV的量子黑洞,该产品的合并95%置信水平上限为0.18 fb。这个限制约束的阈值量子黑洞质量为5.3 TeV以上的模型考虑。

英文摘要:

This Letter presents a search for quantum black-hole production using 20.3 inverse fb of data collected with the ATLAS detector in pp collisions at the LHC at sqrt(s) = 8 TeV. The quantum black holes are assumed to decay into a lepton (electron or muon) and a jet. In either channel, no event with a lepton-jet invariant mass of 3.5 TeV or more is observed, consistent with the expected background. Limits are set on the product of cross sections and branching fractions for the lepton+jet final states of quantum black holes produced in a search region for invariant masses above 1 TeV. The combined 95% confidence level upper limit on this product for quantum black holes with threshold mass above 3.5 TeV is 0.18 fb. This limit constrains the threshold quantum black-hole mass to be above 5.3 TeV in the model considered.

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。

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