Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in View the MathML source proton?proton collisions

G. OTERO Y GARZON, ET. AL., THE ATLAS COLLABORATION

PHYSICS LETTERS B

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2012 vol. 710 p. 67 - 85

0370-2693

A search for squarks and gluinos in events containing jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2011 by the ATLAS experiment in <img height="16" border="0" style="vertical-align:bottom" width="74" alt="View the MathML source" title="View the MathML source" src="http://ars.els-cdn.com/content/image/1-s2.0-S037026931200192X-si2.gif"> proton?proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation is observed in 1.04  fb−1 of data. Gluino and squark masses below 700 GeV and 875 GeV respectively 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. The exclusion limit increases to 1075 GeV for squarks and gluinos of equal mass. In MSUGRA/CMSSM models with <img height="13" border="0" style="vertical-align:bottom" width="67" alt="View the MathML source" title="View the MathML source" src="http://ars.els-cdn.com/content/image/1-s2.0-S037026931200192X-si4.gif">, A0=0 and μ>0, squarks and gluinos of equal mass are excluded for masses below 950 GeV. These limits extend the region of supersymmetric parameter space excluded by previous measurements.