Title
Search for standard model production of four top quarks in the lepton + jets channel in pp collisions <tex>$\sqrt{s}=$</tex>8 TeV Search for standard model production of four top quarks in the lepton + jets channel in pp collisions <tex>$\sqrt{s}=$</tex>8 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Bristol ,
Subject
Physics
Source (journal)
Journal of high energy physics. - Bristol
Volume/pages
(2014) :11 , 31 p.
ISSN
1126-6708
1029-8479
1029-8479
Article Reference
154
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A search is presented for standard model (SM) production of four top quarks (WO in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb(-1) recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC. The expected cross section for SM t (t) over bart (t) over bar production is sigma(SM)(t ($t) over bart (t) over bar) approximate to 1 fb. A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. The data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a 95% confidence level on the cross section for producing four top quarks in the SM, where a limit of 32 + 17 fb is expected.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/5ed365/9595.pdf
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