ATLAS measurements of the properties of jets for boosted particle searches
ATLAS measurements of the properties of jets for boosted particle searches
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DOI：
10.1103/physrevd.86.072006
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发表时间：
2012-10-15
影响因子：
5
通讯作者：
Zwalinski, L.
中科院分区：
文献类型：
--
作者：
Aad, G.;Abbott, B.;Zwalinski, L.
本文对质子-质子碰撞产生的高横向动量射流的性质进行了测量，其质心能量为根s = 7 TeV。这些数据对应的综合光度为35 pb(-1)，由ATLAS探测器于2010年收集。采用反k(t)算法，在距离参数R 0: 6和1.0、横向动量p(t) > 300 GeV、伪速度垂直杆eta垂直杆< 2的条件下，重建了射流质量、射流宽度、偏心率、平面流量和角度。将测量结果与蒙特卡罗生成器的期望进行比较，后者将导对数部分簇与导阶或次导阶矩阵元素相匹配。发生器描述了喷流的一般特征，尽管在某些分布中观察到差异。
Measurements are presented of the properties of high transverse momentum jets, produced in proton-proton collisions at a center-of-mass energy of root s = 7 TeV. The data correspond to an integrated luminosity of 35 pb(-1) and were collected with the ATLAS detector in 2010. Jet mass, width, eccentricity, planar flow and angularity are measured for jets reconstructed using the anti-k(t) algorithm with distance parameters R 0: 6 and 1.0, with transverse momentum p(T) > 300 GeV and pseudorapidity vertical bar eta vertical bar < 2. The measurements are compared to the expectations of Monte Carlo generators that match leading-logarithmic parton showers to leading-order, or next-to-leading-order, matrix elements. The generators describe the general features of the jets, although discrepancies are observed in some distributions.