INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Search for Diphoton Events with Large Missing Transverse Energy with 1 fb-1 of 7 TeV Proton-Proton Collision Data with the ATLAS Detector
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 231 p. 1 - 23
ISSN:
0370-2693
Resumen:
A search for diphoton events with large missing transverse momentum has
been performed using 1.07 fb^-1 of proton-proton collision data at
sqrt(s) = 7 TeV recorded with the ATLAS detector. No excess of events
was observed above the Standard Model prediction and 95% Confidence
Level (CL) upper limits are set on the production cross section for new
physics: sigma < (22-129) fb in the context of a generalised model of
gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest
neutralino, sigma < (27-91) fb in the context of a minimal model of
gauge-mediated supersymmetry breaking (SPS8) and (15-27) fb in the
context of a specific model with one universal extra dimension (UED). A
95% CL lower limit of 805 GeV, for bino masses above 50 GeV, is set on
the GGM gluino mass. Lower limits of 145 TeV and 1.23 TeV are set on the
SPS8 breaking scale Lambda and on the UED compactification scale 1/R,
respectively. These limits provide the most stringent tests of these
models to date.