Measurement of top-antitop differential cross sections in the di-lepton channel with ATLAS in p-p collisions at 7TeV

Lie, Ki

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https://hdl.handle.net/2142/78395 Copy

Description

Title

Measurement of top-antitop differential cross sections in the di-lepton channel with ATLAS in p-p collisions at 7TeV

Author(s)

Lie, Ki

Issue Date

2015-04-16

Director of Research (if dissertation) or Advisor (if thesis)

Errede, Steven M.

Doctoral Committee Chair(s)

Liss, Tony M.

Committee Member(s)

• Willenbrock, Scott S.
• Yang, Liang

Department of Study

Physics

Discipline

Physics

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

• Large Hadron Collider (LHC)
• A Toroidal LHC Apparatus (ATLAS)
• top

Abstract

This dissertation presents a measurement of differential cross sections as a function of mass, transverse momentum and rapidity of the top quark pairs using $\sqrt{s} = 7 \TeV$ proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. This data corresponds to an integrated luminosity of \lumitot. Events with top quark pair signatures are selected in the di-lepton channel. The reconstructed differential distributions are subtracted with estimated backgrounds and are corrected for detector response and acceptance to the top parton level. The measured differential cross sections are compared with different Monte Carlo generators of top quark pair production. The results are consistent with the Standard Model predictions and with the differential cross section results measured in the lepton+jets channel.

Graduation Semester

2015-5

Type of Resource

text

Permalink

http://hdl.handle.net/2142/78395

Copyright and License Information

Copyright 2015 Ki Lie

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