First measurement of the cross section for top-quark pair production in proton-proton collisions at √s=7 TeV

Link:

https://doi.org/10.1016/j.physletb.2010.11.058

Erscheinungsjahr:

2011

Medientyp:

Text

Schlagworte:

CMS
Cross section
LHC
Physics
Top quark

Beschreibung:

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=7 TeV 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. © 2010 CERN.

Lizenz:

info:eu-repo/semantics/openAccess

Quellsystem:

Forschungsinformationssystem der UHH

Interne Metadaten

Quelldatensatz: oai:www.edit.fis.uni-hamburg.de:publications/a355b01a-8ca0-48ea-a971-73c34586c735