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First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at √s = 7 TeV

First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at √s = 7 TeV
First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at √s = 7 TeV
The first measurement of the cross section for top-quark pair production in pp collisions at the Large Hadron Collider at center-of-mass energy √s = 7TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1 ± 0.3 pb-1 recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from Drell–Yan and non-W/Z boson production are estimated from data. Eleven events are observed in the data with 2.1 ± 1.0 events expected from background. The measured cross section is 194 ± 72(stat.) ± 24(syst.) ± 21(lumi.) pb, consistent with next-to-leading order predictions.
0370-2693
424-443
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

Khachatryan, Vardan and Belyaev, Alexander (2011) First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at √s = 7 TeV. Physics Letters B, B695, 424-443. (doi:10.1016/j.physletb.2010.11.058).

Record type: Article

Abstract

The first measurement of the cross section for top-quark pair production in pp collisions at the Large Hadron Collider at center-of-mass energy √s = 7TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1 ± 0.3 pb-1 recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from Drell–Yan and non-W/Z boson production are estimated from data. Eleven events are observed in the data with 2.1 ± 1.0 events expected from background. The measured cross section is 194 ± 72(stat.) ± 24(syst.) ± 21(lumi.) pb, consistent with next-to-leading order predictions.

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More information

Published date: 2011
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 411663
URI: http://eprints.soton.ac.uk/id/eprint/411663
ISSN: 0370-2693
PURE UUID: a11d9140-14ee-4c80-9761-96debc59f87e
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 21 Jun 2017 16:33
Last modified: 08 Mar 2021 17:35

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