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arXiv 0810.2059hep-ex
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在\boldmath $\sqrt{s}=$ 1.96 TeV上寻找\boldmath PDMATHAAB高质量共振

Search for High-Mass \boldmath$e^+e^-$ Resonances in \boldmath$p\bar{p}$ Collisions at \boldmath$\sqrt{s}=$1.96 TeV

The CDF Collaboration, T. Aaltonen

摘要:

基于费米实验室Tevatron CDF II探测器的$\sqrt{s}=$ 1.96 TeV $p\bar{p}$的2.5 fb $^{-1}$碰撞数据,对$e^+e^-$末态的高质量共振进行了研究。超过标准模型预测的最大值是在$e^+e^-$不变质量为240 GeV/ $c^2$处。在150- 1,000 GeV/ $c^2$的质量范围内,在标准模型中任何地方观测到这种由涨落引起的过剩的概率是0.6%(相当于2.5 $σ$)。我们排除了标准模型耦合$Z'$和Randall-Sundrum引力子$k/\overline{M}_{Pl}=0.1$与质量低于963和848 GeV/ $c^2$在95%的可信度水平,分别。

英文摘要:

A search for high-mass resonances in the $e^+e^-$ final state is presented based on 2.5 fb$^{-1}$ of $\sqrt{s}=$1.96 TeV $p\bar{p}$ collision data from the CDF II detector at the Fermilab Tevatron. The largest excess over the standard model prediction is at an $e^+e^-$ invariant mass of 240 GeV/$c^2$. The probability of observing such an excess arising from fluctuations in the standard model anywhere in the mass range of 150--1,000 GeV/$c^2$ is 0.6% (equivalent to 2.5 $σ$). We exclude the standard model coupling $Z'$ and the Randall-Sundrum graviton for $k/\overline{M}_{Pl}=0.1$ with masses below 963 and 848 GeV/$c^2$ at the 95% credibility level, respectively.

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。

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