Performance of missing transverse momentum reconstruction in proton-proton collisions at √s=7 TeV with ATLAS
Performance of missing transverse momentum reconstruction in proton-proton collisions at √s=7 TeV with ATLAS
复制标题
ATLAS 在 √s=7 TeV 质子-质子对撞中的缺失横动量重构性能
DOI：
10.1140/epjc/s10052-011-1844-6
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发表时间：
2012-01-01
影响因子：
4.4
通讯作者：
Zwalinski, L.
中科院分区：
文献类型：
--
作者：
Aad, G.;Abbott, B.;Zwalinski, L.
本文描述的 ATLAS 探测器中缺失横向动量的测量利用了全事件重建和基于重建物理对象的校准。使用 2010 年在 7 TeV 质心能量的 pp 碰撞中收集的数据来评估缺失的横向动量重建的性能。使用来自分别对应于约 0.3 nb(-1) 和 600 nb(-1) 积分光度的数据样本的最小偏置事件和强子射流事件，以及包含 Z 玻色子衰变成两个轻子（电子或 μ 子）或 W 玻色子的事件从对应于约 36 pb(-1) 积分光度的数据样本中衰变为轻子（电子或 μ 子）和中微子。提出了对缺失横向动量尺度的系统不确定性的估计。
The measurement of missing transverse momentum in the ATLAS detector, described in this paper, makes use of the full event reconstruction and a calibration based on reconstructed physics objects. The performance of the missing transverse momentum reconstruction is evaluated using data collected in pp collisions at a centre-of-mass energy of 7 TeV in 2010. Minimum bias events and events with jets of hadrons are used from data samples corresponding to an integrated luminosity of about 0.3 nb(-1) and 600 nb(-1) respectively, together with events containing a Z boson decaying to two leptons (electrons or muons) or a W boson decaying to a lepton (electron or muon) and a neutrino, from a data sample corresponding to an integrated luminosity of about 36 pb(-1). An estimate of the systematic uncertainty on the missing transverse momentum scale is presented.