A measurement of the top quark electric charge is carried out in the ATLAS experiment at the Large Hadron Collider using 2.05 fb???1 of data at a centre-of-mass energy of 7 TeV. In units of the elementary electric charge, the top quark charge is determined to be 0.64 ± 0.02 (stat.) ± 0.08 (syst.) from the charges of the top quark decay products in single lepton TeX candidate events. This excludes models that propose a heavy quark of electric charge ???4/3, instead of the Standard Model top quark, with a significance of more than 8??.

Measurement of the top quark charge in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

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;ZURZOLO, GIOVANNI;
2013

Abstract

A measurement of the top quark electric charge is carried out in the ATLAS experiment at the Large Hadron Collider using 2.05 fb???1 of data at a centre-of-mass energy of 7 TeV. In units of the elementary electric charge, the top quark charge is determined to be 0.64 ± 0.02 (stat.) ± 0.08 (syst.) from the charges of the top quark decay products in single lepton TeX candidate events. This excludes models that propose a heavy quark of electric charge ???4/3, instead of the Standard Model top quark, with a significance of more than 8??.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/595408
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