arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0802.0432hep-ex
收藏

在s**(1/2)=1.96 TeV质子-反质子碰撞中寻找横向能量缺失事件中的希格斯玻色子和b夸克喷流

Search for the Higgs boson in events with missing transverse energy and b quark jets produced in proton-antiproton collisions at s**(1/2)=1.96 TeV

CDF Collaboration, T. Aaltonen

摘要:

我们寻找标准模型希格斯玻色子玻色子产生与电弱矢量玻色子在事件中没有确定的带电轻子,大的横向动量不平衡,和两个喷流,其中至少一个包含一个二级顶点符合衰变的b强子。我们使用CDF II实验在Tevatron上记录的s**(1/2)=1.96 TeV质子-反质子碰撞的~1 fb-1积分亮度。我们发现268(16)单(双)b标记的候选事件,其中248 +/- 43(14.4 +/- 2.7)预计从标准模型背景过程。我们把95%的置信水平上限的希格斯玻色子生产截面的几个希格斯玻色子质量范围从110 GeV/c2到140 GeV/c2。对于质量为115 GeV/c2的观测(预期)极限是标准模型预测的20.4(14.2)倍。

英文摘要:

We search for the standard model Higgs boson produced in association with an electroweak vector boson in events with no identified charged leptons, large imbalance in transverse momentum, and two jets where at least one contains a secondary vertex consistent with the decay of b hadrons. We use ~1 fb-1 integrated luminosity of proton-antiproton collisions at s**(1/2)=1.96 TeV recorded by the CDF II experiment at the Tevatron. We find 268 (16) single (double) b-tagged candidate events, where 248 +/- 43 (14.4 +/- 2.7) are expected from standard model background processes. We place 95% confidence level upper limits on the Higgs boson production cross section for several Higgs boson masses ranging from 110 GeV/c2 to 140 GeV/c2. For a mass of 115 GeV/c2 the observed (expected) limit is 20.4 (14.2) times 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。

↑