IFLP 13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Measurement of the top quark charge in pp collisions at √s= 7 TeV with the ATLAS detector
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2013 vol. 231 p. 1 - 23
ISSN:
1126-6708
Resumen:
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 tt¯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 8σ.
