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Title: Measurement of the tt̄ cross-section at 7 TeV with 36 PB⁻¹ of data in the electron+jets decay channel using the CMS detector
Author: Chadwick, Matthew
Awarding Body: Brunel University
Current Institution: Brunel University
Date of Award: 2012
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A measurement of the top-pair production cross-section at a centre-of-mass energy of 7 TeV using proton-proton collisions with 36 pb-1 of data collected by CMS at the Large Hadron Collider is presented. The analysis is performed using the nal state that consists of one isolated electron with jets, one of which is required to be identified as being consistent with including the decay of a B hadron. The measured cross-section with three or more selected jets is 169 +/- 13(stat:)+37 +32(sys:)+8 -7(lumi:) pb and 197 +/- 17(stat:)+38 -35(sys:)+9 -8(lumi:) pb for four or more jets. The results are consistent with NLO and approximate NNLO theoretical predictions.
Supervisor: Hobson, P. R.; Khan, A. Sponsor: Science and Technologies Funding Council
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: High-energy particle physics ; B-jet tagging