Measurement of the inclusive t t ¯ cross section in pp collisions at √s=5.02 TeV using final states with at least one charged lepton

• Main Authors: Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
• Format: Article
• Language: English; English; English
• Published: Springer Nature 2018
• Subjects: QC Physics
• Online Access: http://irep.iium.edu.my/64860/1/64860_Measurement%20of%20the%20inclusive%20%20%5BMath%20Processing%20Error%5D_article.pdf; http://irep.iium.edu.my/64860/2/64860_Measurement%20of%20the%20inclusive%20%20%5BMath%20Processing%20Error%5D_scopus.pdf; http://irep.iium.edu.my/64860/13/64860_Measurement%20of%20the%20inclusive%20t%20t%20_WoS.pdf; http://irep.iium.edu.my/64860/; https://link.springer.com/content/pdf/10.1007%2FJHEP03%282018%29115.pdf

The top quark pair production cross section (σt t ¯) is measured for the first time in pp collisions at a center-of-mass energy of 5.02 TeV. The data were collected by the CMS experiment at the LHC and correspond to an integrated luminosity of 27.4 pb−1. The measurement is performed by analyzing events with at least one charged lepton. The measured cross section is σt t ¯ = 69.5 ± 6.1 (stat) ± 5.6 (syst) ± 1.6 (lumi) pb, with a total relative uncertainty of 12%. The result is in agreement with the expectation from the standard model. The impact of the presented measurement on the determination of the gluon distribution function is investigated.