Measurement of the t[bar over t] production cross section in the dilepton channel in pp collisions at √s =7 TeV

Measurement of the t[bar over t] production cross section in the dilepton channel in pp collisions at √s =7 TeV

The t[bar over t] over bar production cross section (σ[subscript t[bar pver t]) over bar)) is measured in proton-proton collisions at root √s = 7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb[superscript -1]. The measurement is performed in events w...

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Bibliographic Details
Main Authors: Apyan, Aram, Bauer, Gerry P, Bendavid, Joshua L., Busza, Wit, Butz, Erik M., Cali, Ivan Amos, Chan, Matthew Hans, Dutta, Valentina, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Hahn, Kristian Allan, Kim, Yongsun, Klute, Markus, Krajczar, Krisztian F., Li, W., Luckey Jr, P David, Ma, Teng, Nahn, Steven, Paus, Christoph M. E., Roland, Christof E, Roland, Gunther M, Stephans, George S. F., Stoeckli, Fabian, Sumorok, Konstanty C, Sung, Kevin Kai Hong, Velicanu, Dragos Alexandru, Wenger, Edward Allen, Wolf, Roger, Wyslouch, Boleslaw, Xie, Si, Yang, Mingming, Yilmaz, Yetkin, Yoon, A. S., Zanetti, Marco
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Published: Springer Nature 2018
Online Access:http://hdl.handle.net/1721.1/117396
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0002-2822-3375
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 t[bar over t] over bar production cross section (σ[subscript t[bar pver t]) over bar)) is measured in proton-proton collisions at root √s = 7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb[superscript -1]. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of sigma(t (t) over bar) for a top-quark mass of 172.5 GeV is 161.9 +/- 2.5 (stat.)[subscript -5.0][superscript +5.1] (syst.) +/- 3.6 (lumi.) pb, consistent with the prediction of the standard model. Keywords: Hadron-Hadron Scattering

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