IFLP 13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at s√=7 TeV using the ATLAS detector
Autor/es:
F. MONTICELLI; ATLAS CLLABORATION
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2015 vol. 1 p. 1 - 20
ISSN:
1126-6708
Resumen:
A measurement of the top-antitop (tt¯) charge asymmetry is presented using data corresponding to an integrated luminosity of 4.6 fb−1 of LHC pp collisions at a centreof-mass energy of 7 TeV collected by the ATLAS detector. Events with two charged leptons, at least two jets and large missing transverse momentum are selected. Two observables are studied: AℓℓC based on the identified charged leptons, and Att¯C , based on the reconstructed tt final state. The asymmetries are measured to be AℓℓC=0.024±0.015(stat.)±0.009(syst.), Att¯C=0.021±0.025(stat.)±0.017(syst.).
