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首页> 外文期刊>European physical journal >Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in ({ext {p}} {ext {p}} ) collisions at (sqrt{s}=13,ext {Te}ext {V} )
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Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in ({ext {p}} {ext {p}} ) collisions at (sqrt{s}=13,ext {Te}ext {V} )

机译:在({ text {p}} { text {p}} { text {p}} { text {p}} = 13的碰撞中的包含2-和3喷射事件中的几乎背对背射流拓扑中的四方分离。( sqrt {s} = 13 , text {te} text {v} )

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摘要

A measurement for inclusive 2- and 3-jet events of the azimuthal correlation between the two jets with the largest transverse momenta, $$arDelta phi _{12}$$ Δ?12, is presented. The measurement considers events where the two leading jets are nearly collinear (“back-to-back”) in the transverse plane and is performed for several ranges of the leading jet transverse momentum. Proton-proton collision data collected with the CMS experiment at a center-of-mass energy of $$13,ext {Te}ext {V} $$ 13Te and corresponding to an integrated luminosity of $$35.9{,ext {fb}^{-1}} $$ 35.9fb-1 are used. Predictions based on calculations using matrix elements at leading-order and next-to-leading-order accuracy in perturbative quantum chromodynamics supplemented with leading-log parton showers and hadronization are generally in agreement with the measurements. Discrepancies between the measurement and theoretical predictions are as large as 15%, mainly in the region $$177^circ arDelta phi _{12} 180^circ $$ 177°Δ?12180°. The 2- and 3-jet measurements are not simultaneously described by any of models.
机译:提出了两个带有最大横向动量的两个喷射器之间的包含2-和3喷射事件的含量2-和3喷射事件,$$ VARDELTA PHI _ {12} $ΔΔ12。测量考虑了两个前导射流在横向平面中几乎相连的(“背对背”)的事件,并且用于引导射流横向动量的几个范围进行。在$$ 13 , text {te} text {v} $$ 13te的质量中心的CMS实验收集质子 - 质子碰撞数据,并对应于35.9 {,文本的总集成光度使用$ 35.9FB-1。基于使用矩阵元素以引导顺序的矩阵元素的计算和扰动量子色力动力学中的下一阶级精度的预测通常与测量相一致地同时达成一致。测量和理论预测之间的差异大约15%,主要是在该地区$$ 177 ^ riS& vardelta phi _ {12}& 180 ^ 循环$$ 177°°Δ12≤12°180°。任何模型都不同时描述2-和3喷射测量。

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