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Title
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Measurement of the top-quark mass in events with dilepton final states in pp collisions at
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2012
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ISSN
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1434-6044
1434-6052
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Volume/pages
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72
:10
(2012)
, p. 1-21
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Article Reference
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2202
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ISI
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000310609100001
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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