Measurement of the tt̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification

Measurement of the tt̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification

A new measurement of the inclusive production cross section for pp→[¯ over tt] is performed at a center-of-mass energy of 7 TeV using data collected by the CMS experiment at the LHC. The analysis uses a data sample corresponding to an integrated luminosity of 36  pb[superscript -1], and is based on...

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Bibliographic Details
Main Authors: Alver, Burak Han, Bauer, Gerry P., Bendavid, Joshua L., Busza, Wit, Butz, Erik M., Cali, Ivan Amos, Chan, M., Dutta, Valentina, Everaerts, Pieter Bruno Bart, Ceballos, Guillelmo Gomez, Goncharov, Maxim, Hahn, Kristian Allan, Harris, Philip Coleman, Kim, Y., Klute, Markus, Lee, Y. J., Li, W., Loizides, Constantin, Luckey, P. David, Jr., Ma, Teng, Nahn, Steven, Paus, Christoph, Ralph, D., Roland, Christof E., Roland, Gunther M., Rudolph, Matthew, Stephans, George S. F., Stockli, Fabian, Sumorok, Konstanty C., Sung, Kevin Kai Hong, Velicanu, Dragos Alexandru, Wenger, Edward Allen, Wolf, R., Wyslouch, Boleslaw, Xie, S., Yang, M., Yilmaz, Yetkin, Yoon, A. S., Zanetti, Marco
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2012
Online Access:http://hdl.handle.net/1721.1/75025
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0002-0869-5631
Description
Summary:A new measurement of the inclusive production cross section for pp→[¯ over tt] is performed at a center-of-mass energy of 7 TeV using data collected by the CMS experiment at the LHC. The analysis uses a data sample corresponding to an integrated luminosity of 36  pb[superscript -1], and is based on the final state with one isolated, high transverse momentum muon or electron, missing transverse energy, and hadronic jets. The tt[over ¯] content of the selected events is enhanced by requiring the presence of at least one jet consistent with b-quark hadronization. The measured cross section is 150±9(stat)±17(syst)±6(lumi)  pb and is in agreement with higher-order QCD calculations. The combination of this measurement with a previous CMS result based on dileptons gives 154±17(stat+syst)±6(lumi)  pb.

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