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arXiv 0912.5285hep-ex
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5.2 fb-1 p-pbar碰撞中ZH ->vvbb通道中TeV =1.96时标准模型希格斯玻色子的研究

Search for the Standard Model Higgs Boson in the ZH->vvbb Channel in 5.2 fb-1 of p-pbar Collisions at sqrt(s)=1.96 TeV

D0 Collaboration

摘要:

对费米实验室Tevatron对撞机D 0探测器收集到的5.2 fb-1 p-pbar碰撞中的标准模型希格斯玻色子进行了搜索。所考虑的最终状态是一对b喷流和大的横向能量缺失,正如从p-pbar->ZH->vvbb产生所预期的那样。当带电轻子未被识别时,搜索对WH->lvbb通道也是敏感的。对于质量为115 GeV的希格斯玻色子,极限设定为95% C. L。在横截面上乘以[p-pbar->(Z/W)H](H->b-bbar)的支化分数,其比标准模型值大3.7倍,与预期的4.6倍一致。

英文摘要:

A search is performed for the standard model Higgs boson in 5.2 fb-1 of p-pbar collisions at sqrt(s)=1.96 TeV, collected with the D0 detector at the Fermilab Tevatron Collider. The final state considered is a pair of b jets and large missing transverse energy, as expected from p-pbar->ZH->vvbb production. The search is also sensitive to the WH->lvbb channel when the charged lepton is not identified. For a Higgs boson mass of 115 GeV, a limit is set at the 95% C.L. on the cross section multiplied by branching fraction for [p-pbar->(Z/W)H](H->b-bbar) that is a factor of 3.7 larger than the standard model value, consistent with the factor of 4.6 expected.

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