INVESTIGADORES
WAHLBERG Hernan Pablo
artículos
Título:
Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using $\sqrt{s}=8$ TeV proton--proton collision data
Autor/es:
H. WAHLBERG Y ATLAS COLLABORATION
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014
ISSN:
1126-6708
Resumen:
A search for squarks and gluinos in final states containing high-p T
jets, missing transverse momentum and no electrons or muons is
presented. The data were recorded in 2012 by the ATLAS experiment in s√=8 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 20.3 fb−1. Results are interpreted in a variety of simplified and specific supersymmetry-breaking models assuming that R-parity
is conserved and that the lightest neutralino is the lightest
supersymmetric particle. An exclusion limit at the 95% confidence level
on the mass of the gluino is set at 1330 GeV for a simplified model
incorporating only a gluino and the lightest neutralino. For a
simplified model involving the strong production of first- and
second-generation squarks, squark masses below 850 GeV (440 GeV) are
excluded for a massless lightest neutralino, assuming mass degenerate
(single light-flavour) squarks. In mSUGRA/CMSSM models with tan β = 30, A 0 = −2m 0 and μ >
0, squarks and gluinos of equal mass are excluded for masses below 1700
GeV. Additional limits are set for non-universal Higgs mass models with
gaugino mediation and for simplified models involving the pair
production of gluinos, each decaying to a top squark and a top quark,
with the top squark decaying to a charm quark and a neutralino. These
limits extend the region of supersymmetric parameter space excluded by
previous searches with the ATLAS detector.