6533b839fe1ef96bd12a61d0

RESEARCH PRODUCT

Search for new physics in the dijet mass distribution using 1 fb-1 of pp collision data at √(s)=7 TeV collected by the ATLAS detector

Atlas CollaborationVasiliki MitsouJuan A. Fuster VerdúAntonio Ferrer SoriaMaría Victoria Castillo GiménezSusana Cabrera UrbánCarmen García GarcíaEmilio Higón RodríguezSalvador Martí GarcíaEduardo Ros MartínezSantiago González De La HozJosé Salt CairolsJuan Antonio Valls FerrerMohammed KaciLuca FioriniYesenia Hernández JiménezCarlos Lacasta LlácerMiguel Villaplana Pérez

subject

Astrophysics::High Energy Astrophysical PhenomenaAcceleradors de partículesCol·lisions (Física nuclear)High Energy Physics::PhenomenologyPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentPartícules (Física nuclear)Detectors de radiació

description

Invariant mass distributions of jet pairs (dijets) produced in LHC proton-proton collisions at a centre-of-mass energy root s = 7 TeV have been studied using a data set corresponding to an integrated luminosity of 1.0 fb(-1) recorded in 2011 by ATLAS. Dijet masses up to similar to 4 TeV are observed in the data, and no evidence of resonance production over background is found. Limits are set at 95% C.L. for several new physics hypotheses: excited quarks are excluded for masses below 299 TeV, axigluons are excluded for masses below 3.32 TeV. and colour octet scalar resonances are excluded for masses below 1.92 TeV.

yearjournalcountryeditionlanguage
2012-01-01
10.1016/j.physletb.2012.01.035http://hdl.handle.net/10550/36384