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, A., Alviggi, M., Canale, V., Cevenini, F., Chiefari, G., DELLA VOLPE, D., Merola, L., Patricelli, S., Conventi, F., DELLA PIETRA, M., Giordano, R., Musto, E., Rossi, E., SANCHEZ PINEDA, A.R., Carlino, G., de Asmundis, R., Di Donato, C., Doria, A., Iengo, P., et al.. - 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.
