A measurement is reported of the production cross section of top-quark pairs (t t??? ) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. Candidate events have a signature consistent with containing two isolated leptons, large missing transverse momentum, and at least two jets. Using a data sample corresponding to an integrated luminosity of 0.70 fb???1, a t t??? production cross section ??tt???=176±5stat.???11+14syst.±8lum. pb is measured for an assumed top-quark mass of m t ???=???172.5 GeV. This measurement is in good agreement with Standard Model predictions.
Measurement of the cross section for top-quark pair production in pp collisions at ???s = 7 TeV with the ATLAS detector using final states with two high-pT leptons / Aad, G.; Aloisio, Alberto; Alviggi, Mariagrazia; Canale, Vincenzo; Cevenini, Francesco; Chiefari, Giovanni; DELLA VOLPE, Domenico; Merola, Leonardo; Patricelli, Sergio; Conventi, Francesco; DELLA PIETRA, Massimo; Giordano, Raffaele; Musto, Elisa; Rossi, Elvira; SANCHEZ PINEDA, ARTURO RODOLFO; Carlino, Gianpaolo; de Asmundis, Riccardo; Di Donato, Camilla; Doria, Alessandra; Iengo, Paolo; Izzo, Vincenzo; Sekhniaidze, Givi; Al, e. t. .. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 59:(2012), pp. 1-34. [10.1007/JHEP05(2012)059]
Measurement of the cross section for top-quark pair production in pp collisions at ???s = 7 TeV with the ATLAS detector using final states with two high-pT leptons
ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;PATRICELLI, SERGIO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi, Elvira;SANCHEZ PINEDA, ARTURO RODOLFO;
2012
Abstract
A measurement is reported of the production cross section of top-quark pairs (t t??? ) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. Candidate events have a signature consistent with containing two isolated leptons, large missing transverse momentum, and at least two jets. Using a data sample corresponding to an integrated luminosity of 0.70 fb???1, a t t??? production cross section ??tt???=176±5stat.???11+14syst.±8lum. pb is measured for an assumed top-quark mass of m t ???=???172.5 GeV. This measurement is in good agreement with Standard Model predictions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
