Title
Measurement of the top-quark mass in <tex>$t\bar{t}$</tex> events with dilepton final states in pp collisions at <tex>$\sqrt{s}=7TeV$</tex> Measurement of the top-quark mass in <tex>$t\bar{t}$</tex> events with dilepton final states in pp collisions at <tex>$\sqrt{s}=7TeV$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Berlin ,
Subject
Physics
Source (journal)
European physical journal : C : particles and fields. - Berlin
Volume/pages
72(2012) :10 , p. 1-21
ISSN
1434-6044
Article Reference
2202
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The top-quark mass is measured in proton-proton collisions at root s = 7 TeV using a data sample corresponding to an integrated luminosity of 5.0 fb(-1) collected by the CMS experiment at the LHC. The measurement is performed in the dilepton decay channel t (t) over bar -> (l(+)nu(l)b) (l-(nu) over bar (l)(b) over bar), where l = e, mu. Candidate top-quark decays are selected by requiring two leptons, at least two jets, and imbalance in transverse momentum. The mass is reconstructed with an analytical matrix weighting technique using distributions derived from simulated samples. Using a maximum-likelihood fit, the top-quark mass is determined to be 172.5 +/- 0.4 (stat.) +/- 1.5 (syst.) GeV.
E-info
https://repository.uantwerpen.be/docman/iruaauth/bb552b/f9e3601.pdf
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/2f15ae/105196.pdf
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