Off-campus UNL users: To download campus access dissertations, please use the following link to log into our proxy server with your NU ID and password. When you are done browsing please remember to return to this page and log out.

Non-UNL users: Please talk to your librarian about requesting this dissertation through interlibrary loan.

Ttbar production cross section measurement in the muon plus jets channel using soft electron tagging in pp collisions at the center of mass nergy = 8 TeV

Jason Keller, University of Nebraska - Lincoln

Abstract

A measurement is made of the top quark pair production cross section through the decay channel tt¯ → μνμ + jets, carried out using the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC), located at CERN in Geneva, Switzerland. The top quark pair events were produced in proton-proton collisions at a center-of-mass energy of 8 TeV. To facilitate the detection of tt¯ events, jets produced from bottom quarks, which are decay products of the top quarks, are identified using electrons with low transverse momentum with respect to the beam axis (soft electrons). The dominant background, W + jets production, is estimated using the preferential production of W+ over W− at the LHC. Techniques to measure or estimate the remaining backgrounds, and the identification efficiency of the soft electron technique are also discussed. The final result of this study is [special characters omitted]

Subject Area

Particle physics

Recommended Citation

Keller, Jason, "Ttbar production cross section measurement in the muon plus jets channel using soft electron tagging in pp collisions at the center of mass nergy = 8 TeV" (2013). ETD collection for University of Nebraska - Lincoln. AAI3589764.
https://digitalcommons.unl.edu/dissertations/AAI3589764

Share

COinS