High Energy Physics - Experiment
[Submitted on 30 Sep 2025
]
Title: Measurement of the dineutrino system kinematic variables in dileptonic top quark pair production in proton-proton collisions at$\sqrt{s}$ = 13 TeV
Title: 在$\sqrt{s}$= 13 TeV的质子-质子碰撞中，双轻子顶夸克对产生中二中微子系统运动学变量的测量
Abstract: Differential top quark pair production cross sections are measured in the dilepton final states e$^+$e$^-$, $\mu^+\mu^-$, and e$^\pm\mu^\mp$, as a function of kinematic variables of the two-neutrino system: the transverse momentum $p_\mathrm{T}^{\nu\nu}$ of the dineutrino system, the minimum distance in azimuthal angle between $\vec{p}_\mathrm{T}^{\,\nu\nu}$ and leptons, and in two dimensions in bins of both observables. The measurements are performed using CERN LHC proton-proton collisions at $\sqrt{s}$ = 13 TeV, recorded by the CMS detector between 2016 and 2018, corresponding to an integrated luminosity of 138 fb$^{-1}$. The measured cross sections are unfolded to the particle level using an unregularized least squares method. Results are compared with predictions by the standard model of particle physics, and found to be in agreement with theoretical calculations as well as Monte Carlo simulations.
Submission history
From: The CMS Collaboration [view email][v1] Tue, 30 Sep 2025 18:29:48 UTC (531 KB)
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