Measurement of the top-quark mass in t[bar over t] events with dilepton final states in pp collisions at s√=7 TeV

Measurement of the top-quark mass in t[bar over t] events with dilepton final states in pp collisions at s√=7 TeV

The top-quark mass is measured in proton-proton collisions at s√=7 TeV using a data sample corresponding to an integrated luminosity of 5.0 fb[superscript −1] collected by the CMS experiment at the LHC. The measurement is performed in the dilepton decay channel t[bar over t]→(ℓ[superscript +]ν[subsc...

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Bibliographic Details
Main Authors: Apyan, Aram, Bauer, Gerry P, Bendavid, Joshua L., Busza, Wit, Cali, Ivan Amos, Dutta, Valentina, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Hahn, Kristian Allan, Klute, Markus, Krajczar, Krisztian F., Li, W., Luckey Jr, P David, Ma, Teng, Nahn, Steven, Paus, Christoph M. E., Ralph, Duncan Kelley, Roland, Christof E, Roland, Gunther M, Rudolph, Matthew Scott, Stephans, George S. F., Stoeckli, Fabian, Sumorok, Konstanty C, Sung, Kevin Kai Hong, Velicanu, Dragos Alexandru, Wenger, Edward Allen, Wolf, Roger, Wyslouch, Boleslaw, Yang, Mingming, Yilmaz, Yetkin, Yoon, Andrew, Zanetti, Marco, Chan, M., Kim, Y.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Springer-Verlag 2016
Subjects:
Springer-Verlag
Online Access:http://hdl.handle.net/1721.1/105794
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0001-6332-5839
Description
Summary:The top-quark mass is measured in proton-proton collisions at s√=7 TeV using a data sample corresponding to an integrated luminosity of 5.0 fb[superscript −1] collected by the CMS experiment at the LHC. The measurement is performed in the dilepton decay channel t[bar over t]→(ℓ[superscript +]ν[subscript ℓ]b)(ℓ[superscript −][bar over ν][subscript ℓ][bar over b]), where ℓ=e,μ. 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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