arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1008.3564hep-ex
收藏

在sqrt(s)= 1.96 TeV时,在4.2 fb^-1 ppbar碰撞中搜索ZH到llbb的生成

Search for ZH to llbb production in 4.2 fb^-1 of ppbar collisions at sqrt(s) = 1.96 TeV

D0 Collaboration, V. Abazov

摘要:

我们提出了一个对标准模型希格斯玻色子玻色子的搜索,该玻色子是在4.2 fb^-1的p-pbar碰撞中与Z玻色子结合产生的,由费米实验室Tevatron的D 0探测器在sqrt(s)= 1.96 TeV处收集的。所选事件包含一个重建的Z到llbb候选和至少两个喷流,包括至少一个b标记的喷流。在没有超出其他标准模型过程预期的背景的情况下,设定ZH横截面乘以分支比的限值。在M_H = 115 GeV处的极限比标准模型的预测大5.9倍。

英文摘要:

We present a search for the standard model Higgs boson produced in association with a Z boson in 4.2 fb^-1 of p-pbar collisions, collected with the D0 detector at the Fermilab Tevatron at sqrt(s) = 1.96 TeV. Selected events contain one reconstructed Z to llbb 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 M_H = 115 GeV is a factor of 5.9 larger than the standard model prediction.

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。

↑