Search for New Physics in the Dijet Mass Distribution using 1 fb$^{-1}$ of $pp$ Collision Data at $\sqrt{s}=$7 TeV collected by the ATLAS Detector

ATLAS collaboration (3024 authors)Aguilar-Saavedra, Juan AntonioAmaral, PedroAnjos, NunoCarvalho, JoaoCastro, Nuno FilipeConde Muino, PatriciaDo Valle Wemans, AndreFiolhais, MiguelGomes, AgostinhoGoncalo, RicardoJorge, PedroLopes, LourencoMachado Miguens, JoanaMaio, AmeliaManeira, JoseOliveira, Miguel AlfonsoOnofre, AntonioPalma, AlbertoPina, Joao AntonioPinto, BelmiroSantos, HelenaSaraiva, JoaoSilva, JoseSoares, MaraVeloso, FilipeWolters, Helmut2019-02-032019-02-032013-07-16http://dx.doi.org/10.1016/j.physletb.2012.01.035http://hdl.handle.net/10400.26/26036Invariant mass distributions of jet pairs (dijets) produced in LHC proton-proton collisions at a centre-of-mass energy sqrt(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 ~4 TeV are observed in the data, and no evidence of resonance production over background is found. Limits are set at 95% CL for several new physics hypotheses: excited quarks are excluded for masses below 2.99 TeV, axigluons are excluded for masses below 3.32 TeV, and colour octet scalar resonances are excluded for masses below 1.92 TeV.engSearch for New Physics in the Dijet Mass Distribution using 1 fb$^{-1}$ of $pp$ Collision Data at $\sqrt{s}=$7 TeV collected by the ATLAS Detectorjournal article2019-02-03