Search for ZH?l+l-bb̄ production in 4.2fb-1 of pp̄ collisions at √s=1.96TeV
Search for ZH?l+l-bb̄ production in 4.2fb-1 of pp̄ collisions at √s=1.96TeV
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在 √s=1.96TeV 的 4.2fb-1 pp̄ 碰撞中搜索 ZH?l+l-bb̄ 的产生
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
E. al.
中科院分区：
文献类型：
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作者：
D0 Collaboration;V. Abazov;E. al.
我们提出了一种寻找标准模型希格斯玻色子与Z玻色子在4.2 fb−1的pp¯碰撞中产生的玻色子，这些玻色子是用费米实验室Tevatron的D0探测器在√s = 1.96 TeV下收集的。所选事件包含一个重构的Z→e+e−或Z→μ+μ−候选事件和至少两个射流，包括至少一个b标记射流。在没有超出其他标准模型过程所期望的背景的情况下，设置ZH横截面乘以分支比率的限制。MH = 115 GeV的极限比标准模型预测大5.9倍。
We present a search for the standard model Higgs boson produced in association with a Z boson in 4.2 fb−1 of pp¯ collisions, collected with the D0 detector at the Fermilab Tevatron at √s = 1.96 TeV. Selected events contain one reconstructed Z→e+e− or Z→μ+μ− candidate and at least two jets, including at least one b-tagged jet. In the absence of an excess over the background expected from other standard model processes, limits on the ZH cross section multiplied by the branching ratios are set. The limit at MH = 115 GeV is a factor of 5.9 larger than the standard model prediction.