Measurement of the $t$-channel single-top quark production cross section at 13 TeV with the CMS detector

TL;DR

This paper reports a measurement of the single-top quark production cross section in the t-channel at 13 TeV using CMS data, providing a test of the Standard Model and a probe for new physics.

Contribution

It presents the first measurement of the t-channel single-top quark cross section at 13 TeV with the CMS detector using the full 2015 dataset.

Findings

Measured cross section consistent with Standard Model predictions

Determined the top/antitop production ratio

Demonstrated the effectiveness of multivariate classifiers in the analysis

Abstract

The electroweak production of single-top quarks in the $t$ channel can be changed by any deviation from the standard model, it is therefore an excellent opportunity to search for new physics. In this poster the recent cross-section measurement performed by the CMS collaboration is presented with the full 2015 dataset of the LHC Run II at a center-of-mass energy of 13 TeV. The cross section and the top/antitop ratio is extracted using a binned maximum likelihood fit to the distribution of a multivariate classifier in events containing one isolated muon in the final state.