INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4.7 fb-1 of √s = 7 TeV proton-proton collision data
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
PHYSICAL REVIEW D
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2013 vol. 213 p. 1 - 23
ISSN:
1550-7998
Resumen:
A search for squarks and
gluinos in final states containing jets, missing transverse momentum and
no high-pT electrons or muons is presented. The data represent the
complete sample recorded in 2011 by the ATLAS experiment in 7 TeV
proton-proton collisions at the Large Hadron Collider, with a total
integrated luminosity of 4.7 fb^-1. No excess above the Standard Model
background expectation is observed. Gluino masses below 860 GeV and
squark masses below 1320 GeV are excluded at the 95% confidence level in
simplified models containing only squarks of the first two generations,
a gluino octet and a massless neutralino, for squark or gluino masses
below 2 TeV, respectively. Squarks and gluinos with equal masses below
1410 GeV are excluded. In MSUGRA/CMSSM models with tan beta = 10, A_0 = 0
and mu > 0, squarks and gluinos of equal mass are excluded for
masses below 1360 GeV. Constraints are also placed on the parameter
space of SUSY models with compressed spectra. These limits considerably
extend the region of supersymmetric parameter space excluded by previous
measurements with the ATLAS detector.