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arXiv 0901.4486hep-ex
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在LEP使用DELPHI探测器搜索一个大的额外维度

Search for one large extra dimension with the DELPHI detector at LEP

DELPHI Collaboration, J. Abdallah

摘要:

对1997-2000年LEP 2实验中DELPHI探测到的单光子进行了重新分析,以研究在具有轻微翘曲的大额外维度的修正ADD方案中是否存在单个额外维度。在质量中心能量为180至209 GeV、积分亮度为~650 pb^{-1}的情况下收集的数据与标准模型的预测一致,并允许在一个大的额外维度上对引力子发射设定限制。在95%CL时,根据基本质量标度M_D得到的极限为1.69 TeV/c^2,预期极限为1.71 TeV/c^2。

英文摘要:

Single photons detected by the DELPHI experiment at LEP2 in the years 1997-2000 are reanalysed to investigate the existence of a single extra dimension in a modified ADD scenario with slightly warped large extra dimensions. The data collected at centre-of-mass energies between 180 and 209 GeV for an integrated luminosity of ~650 pb^{-1} agree with the predictions of the Standard Model and allow a limit to be set on graviton emission in one large extra dimension. The limit obtained on the fundamental mass scale M_D is 1.69 TeV/c^2 at 95% CL, with an expected limit of 1.71 TeV/c^2.

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