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arXiv 1012.1331hep-ph
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电弱精密度数据整体拟合的现状

Status of the global fit to electroweak precisions data

Martin Goebel

摘要:

在本报告中,Gfitter结果从全球标准模型(SM)适合电弱精密数据进行了讨论。我们已经使用了最新的测量m_top和M_W和最新的结果,直接在LEP和Tevatron的Higgs搜索。我们得到SM Higgs质量的M_H=121^{+17}_{-6} GeV和155 GeV的95% CL上限。强耦合常数的四阶结果为α_S(M_Z^2)=0.1193 +- 0.0028(exp)+- 0.0001(theo)。此外,还使用在Tevatron测量的ttbar横截面确定的顶部质量进行了电弱拟合。

英文摘要:

In this presentation Gfitter results from the global Standard Model (SM) fit to electroweak precision data are discussed. We have used the latest measurements of m_top and M_W and the most recent results for direct Higgs searches at LEP and Tevatron. We obtain M_H=121^{+17}_{-6} GeV and a 95% CL upper limit of 155 GeV for the SM Higgs mass. The forth-order result for the strong coupling constant is given by alpha_S(M_Z^2)=0.1193 +- 0.0028(exp) +- 0.0001(theo). In addition the electroweak fit has been performed with the top mass determined from the ttbar cross-section as measured at Tevatron.

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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