Hunt for new phenomena using large jet multiplicities and missing transverse momentum with ATLAS in 4:7 fb􀀀1 of p s = 7 TeV proton-proton collisions

ATLAS COLLABORATION, G. AAD, MT DOVA ET AL

JOURNAL OF HIGH ENERGY PHYSICS

SPRINGER

Lugar: Berlin; Año: 2012 vol. 7 p. 167 - 187

1126-6708

Results are presented of a search for new particles decaying to large numbers of jets in association with missing transverse momentum, using 4.7 fb􀀀1 of pp collision data at s = 7 TeV collected by the ATLAS experiment at the Large Hadron Collider in 2011. The event selection requires missing transverse momentum, no isolated electrons or muons, and from 6 to 9 jets. No evidence is found for physics beyond the Standard Model. The results are interpreted in the context of a MSUGRA/CMSSM supersymmetric model, where, for large universal scalar mass m0, gluino masses smaller than 840 GeV are excluded at the 95% condence level, extending previously published limits. Within a simplied model containing only a gluino octet and a neutralino, gluino masses smaller than 870 GeV are similarly excluded for neutralino masses below 100 GeV.