"Table 47" of "Properties of jets measured from tracks in proton-proton collisions at center-of-mass energy sqrt(s) = 7 TeV with the ATLAS detector"
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CERN-LHC. Measurement of the properties of charged particle jets produced in proton-proton collisions at a centre-of-mass energy of 7 TeV using a minimum-bias trigger. The data were taken during 2010 and have an integrated luminosity of 779 mub^{-1}. Jets are reconstructed using the anti-kT algorithm with radius parameters 0.4 and 0.6 applied to charged particles with PT > 300 MeV. The measured track-based jets are corrected back to truth-level charged particle jets, which are defined to be the jets obtained when the same algoerithm is applied to all primary charged particles with the same PT cut. Measurements of the PT cross sections, multiplicities per jet, fragmentation Z distributions, transverse momentum and charged particle radial densities relative to the jet axes are presented in slices of rapidity and transverse momentum. Note added (27 JUN 2014): The cross section values reported in Tables 1-4 below should be multiplied by a factor of 1.0187 to take into account the updated value of the integrated luminosity for the ATLAS 2010 data taking period. The uncertainty on the global normalisation ("Lumi") increases slightly from 3.4% to 3.5%. See Eur.Phys.J. C73 (2013) 2518 for more details.
欧洲核子研究中心大型强子对撞机(CERN-LHC)开展了一项测量工作:利用最小偏置触发(minimum-bias trigger)条件,对质心系能量为7 TeV的质子-质子碰撞中产生的带电粒子喷注的性质进行测量。本数据集采集于2010年,积分亮度为779 μb⁻¹。喷注重建采用anti-kT算法(anti-kT algorithm),选取半径参数0.4与0.6,仅对横向动量(PT, transverse momentum)大于300 MeV的带电粒子进行重建。基于径迹的测量喷注被校正至真实级带电粒子喷注,后者定义为采用相同算法、针对所有满足相同PT截断条件的原初带电粒子进行重建得到的喷注。本工作给出了快度(rapidity)与横向动量分箱区间内,PT截面、单喷注多重数、碎裂Z分布、相对于喷注轴的横向动量分布以及带电粒子径向密度的测量结果。2014年6月27日补充说明:鉴于阿特拉斯(ATLAS)实验2010年数据采集阶段积分亮度的更新值,下表1至表4中报告的截面数值需乘以修正因子1.0187。整体归一化("亮度(Lumi)")的不确定度由3.4%小幅提升至3.5%。更多细节可参考《欧洲物理杂志C辑》(Eur.Phys.J. C)73卷(2013年)第2518号论文。
创建时间:
2024-01-31



