Constraining QCD multijet background in the t-channel single-top quark production at √(s)=13 TeV

2017/12/17 by Krintiras, Georgios Konstantinos
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1712.06106

Abstract

Precision measurement of the cross section for single top production is an important test of the Standard Model (SM). The purity of the collected data in single top events is limited by the understanding of the shape and yield of background contributions. Besides electroweak and \rmtt processes, QCD multijet events constitute a non-negligible background for the considered signal bq'→ tq (t-channel) process. The data-driven technique for constraining QCD contribution, employed in the measurement of the t-channel single top-quark cross section using the very first LHC proton-proton collisions at √(s)=13 TeV with the CMS detector, is described. The dataset corresponds to an integrated luminosity of L=42 pb^-1.

Related

• Cross section measurement of t-channel single top quark production in pp collisions at √(s) = 13 TeV
• Measurement of the single top quark and antiquark production cross sections in the t channel and their ratio at 13 TeV
• Measurement of differential cross sections for t-channel single-top-quark production at 13 TeV
• Measurement of the t-channel single-top quark production cross section\n at 13 TeV with the CMS detector
• Single top quark cross section measurement in the t-channel at the high-luminosity LHC