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arXiv 1101.2889hep-exnucl-ex
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LHC的非常前沿量热法-来自ATLAS的最新结果

Very Forward Calorimetry at the LHC - Recent results from ATLAS

Sebastian N. White

摘要:

我们目前的第一个结果从ATLAS零度量热仪(ZDC)的基础上7 TeV pp碰撞数据记录在2010年。ZDC在正向的+/-~350微弧度的覆盖范围使得在x_F>~0.1的运动学区域和在大x_F下p_T <~1.2 GeV/c的范围内测量中性粒子(主要是π 0和中子)成为可能。ATLAS ZDC的独特之处在于它提供了电磁和强子簇射的完整图像。这一点可以用能量为0.7 - 3.5 TeV的π 0的重建来说明。我们还讨论了波形重建算法,它允许良好的飞行时间分辨率领先的中子出现的碰撞,尽管稀疏(40 MHz)采样的量热计信号。

英文摘要:

We present first results from the ATLAS Zero Degree Calorimeters (ZDC) based on 7~TeV pp collision data recorded in 2010. The ZDC coverage of +/-~350 microradians about the forward direction makes possible the measurement of neutral particles (primarily pi0's and neutrons) over the kinematic region x_F >~0.1 and out to p_T<~ 1.2 GeV/c at large x_F. The ATLAS ZDC is unique in that it provides a complete image of both electromagnetic and hadronic showers.This is illustrated with the reconstruction of pi0's with energies of 0.7-3.5 TeV. We also discuss the waveform reconstruction algorithm which has allowed good time-of-flight resolution on leading neutrons emerging from the collisions despite the sparse (40 MHz) sampling of the calorimeter signals used.

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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