Top Quark Results Using CMS Data at 7 TeV

TL;DR

This paper reviews CMS experiment results from 7 TeV data on top quark properties, including production cross sections, mass, and searches for new physics, confirming Standard Model predictions and exploring potential deviations.

Contribution

It provides the first comprehensive overview of top quark measurements at 7 TeV with CMS, including cross sections, mass, and new physics searches, using multiple decay channels.

Findings

Measured top pair production cross section in various channels.

Determined the top quark mass with dilepton and lepton+jets data.

Set limits on new physics through invariant mass and charge asymmetry analyses.

Abstract

I give an overview of recent results on top quark properties and interactions, obtained using data collected with the CMS experiment during the years 2010--2011 at sqrt(s)= 7 TeV. Measurements are presented for the inclusive top pair production cross section, using the dilepton, lepton plus jets, and hadronic channels. The mass of the top quark is measured using the dilepton and lepton plus jets samples. CMS also measures the cross section for electroweak production of single top quarks and constrains the CKM matrix element V_tb. Top quark results are compared with Standard Model predictions and used to search for possible presence of new physics. In particular, measurements of the top-pair invariant mass distribution are used to search for new particles decaying to top pairs. CMS has also investigated the top-pair charge asymmetry to search for possible new physics contributions.