Differential cross section measurements for the production of top quark pairs and of additional jets using dilepton events from pp collisions at √s = 13 TeV

the CMS Collaboration, David B Anthony, Eshwen Bhal, Jim Brooke, Aaron Bundock, Emyr J Clement, David G Cussans, H. Flächer, Maciej Glowacki, Joel Goldstein, Greg P Heath, Helen F Heath, Lukasz Kreczko, Benjamin Edward Krikler, Sudarshan Paramesvaran, Sarah A Seif El Nasr, Vincent J Smith, Nicolas Stylianou, Katie L M R Walkingshaw Pass, Robert S Whiteet al.

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

Differential cross sections for top quark pair (t t̅) production are measured in proton-proton collisions at a center-of-mass energy of 13 TeV using a sample of events containing two oppositely charged leptons. The data were recorded with the CMS detector at the CERN Large Hadron Collider and correspond to an integrated luminosity of 138 fb−1. The differential cross sections are measured as functions of kinematic observables of the t t̅ system, the top quark and antiquark and their decay products, as well as of the number of additional jets in the event. The results are presented as functions of up to three variables and are corrected to the parton and particle levels. When compared to standard model predictions based on quantum chromodynamics at different levels of accuracy, it is found that the calculations do not always describe the observed data. The deviations are found to be largest for the multi-differential cross sections.

Original languageEnglish
Article number64
Number of pages225
JournalJournal of High Energy Physics
Volume2025
DOIs
Publication statusPublished - 11 Feb 2025

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