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arXiv 0810.2396hep-ex
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低质量标准模型希格斯玻色子在Tevatron上的电子能谱

Searches at the Tevatron for a Low Mass Standard Model Higgs Boson

Bernd Stelzer

摘要:

我们报告的搜索标准模型希格斯玻色子的CDF和D 0探测器使用高达2.7 FB $^{-1}$的$\sqrt s=$ 1.96 TeV的质子反质子碰撞在费米实验室的Tevatron。我们专注于对低质量希格斯粒子产生敏感的分析,其中$m_H<$ 140 GeV/ $c^2$受到精确电弱约束的青睐。CDF和D 0都没有发现希格斯玻色子产生的证据,并设定了截面乘以分支比的上限。几项分析改进提高了对希格斯信号的灵敏度,比单独增加数据集所预期的要快。

英文摘要:

We report on searches for the standard model Higgs boson with the CDF and D0 detectors using up to 2.7 fb$^{-1}$ of $\sqrt s=$ 1.96 TeV proton anti-proton collisions at Fermilab's Tevatron. We focus on analyses that are sensitive to low mass Higgs production with $m_H<$ 140 GeV/$c^2$ favored by precision electroweak constraints. Both CDF and D0 find no evidence for Higgs boson production, and set upper limits on cross section times branching ratio. Several analyses improvements have increased the sensitivity to a Higgs signal faster than what is expected from increasing datasets alone.

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