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arXiv 1012.4272hep-ex
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用ATLAS探测器寻找7个TeV质子-质子碰撞中大失能双光子事例

Search for Diphoton Events with Large Missing Transverse Energy in 7 TeV Proton-Proton Collisions with the ATLAS Detector

The ATLAS Collaboration

摘要:

本文提出了一种寻找具有大横向能量丢失的双光子事例的方法。这些数据是用ATLAS探测器在欧洲核子研究中心大型强子对撞机上收集的,能量为7 TeV,对应的积分亮度为3.1/pb。在标准模型背景预测值之上没有观察到过多的此类事件。在一个具有一个普适额外维度、紧致化半径R和引力诱导衰变的特定模型中,1/R < 728 GeV的值被排除在95% CL之外,这是迄今为止该模型最敏感的极限。

英文摘要:

A search for diphoton events with large missing transverse energy is presented. The data were collected with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV at the CERN Large Hadron Collider and correspond to an integrated luminosity of 3.1/pb. No excess of such events is observed above the Standard Model background prediction. In the context of a specific model with one Universal Extra Dimension with compactification radius R and gravity-induced decays, values of 1/R < 728 GeV are excluded at 95% CL, providing the most sensitive limit on this model to date.

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