Fakultät für Mathematik und Physik, Albert-Ludwigs-Universität, Freiburg i. Br., Germany.
Phys Rev Lett. 2011 Dec 2;107(23):231801. doi: 10.1103/PhysRevLett.107.231801. Epub 2011 Nov 30.
A search for a Higgs boson has been performed in the H→WW→ℓνjj channel in 1.04 fb(-1) of pp collision data at √s=7 TeV recorded with the ATLAS detector at the Large Hadron Collider. No significant excess of events is observed over the expected background and limits on the Higgs boson production cross section are derived for a Higgs boson mass in the range 240 GeV<m(H)<600 GeV. The best sensitivity is reached for m(H)=400 GeV, where the 95% confidence level upper bound on the cross section for H→WW production is 3.1 pb, or 2.7 times the standard model prediction.
使用 ATLAS 探测器在 7 TeV 的质心系能量对 1.04 fb-1 的 pp 碰撞数据进行了希格斯玻色子搜寻，分析过程为 H→WW→ℓνjj 道。观测到的数据中没有超出预期本底的事例，因此对 240 GeV<m(H)<600 GeV 质量范围内的希格斯玻色子产生截面给出了限制。在 m(H)=400 GeV 处灵敏度最高，此时希格斯玻色子到 WW 对产生的截面在 95%置信水平下的上界为 3.1 pb，是标准模型预言值的 2.7 倍。
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