INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 2012 p. 1 - 23
ISSN:
1126-6708
Resumen:
The results of a search for direct pair production of heavy top-quark
partners in 4.7 fb-1 of integrated luminosity from pp collisions at
sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC are reported.
Heavy top-quark partners decaying into a top quark and a neutral
non-interacting particle are searched for in events with two leptons in
the final state. No excess above the Standard Model expectation is
observed. Limits are placed on the mass of a supersymmetric scalar top
and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a
mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral
non-interacting particle lighter than 100 GeV, is excluded at 95%
confidence level.