6533b85efe1ef96bd12c03f0

RESEARCH PRODUCT

Search for quark contact interactions in dijet angular distributions in pp collisions at sqrt(s) = 7 TeV measured with the ATLAS detector at the LHC

Atlas CollaborationVasiliki MitsouAntonio Ferrer SoriaJuan Antonio Valls FerrerMaría Victoria Castillo GiménezSusana Cabrera UrbánJuan A. Fuster VerdúLuca FioriniEduardo Ros MartínezYesenia Hernández JiménezCarlos Lacasta LlácerEmilio Higón RodríguezJosé Salt CairolsSantiago González De La HozCarmen García GarcíaSalvador Martí GarcíaMiguel Villaplana Pérez

subject

Astrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclear

description

Dijet angular distributions from the first LHC pp collisions at center-of-mass energy root s = 7 TeV have been measured with the ATLAS detector. The dataset used for this analysis represents an integrated luminosity of 3.1 pb(-1). Dijet chi distributions and centrality ratios have been measured up to dijet masses of 2.8 TeV, and found to be in good agreement with Standard Model predictions. Analysis of the chi distributions excludes quark contact interactions with a compositeness scale Lambda below 3.4 TeV, at 95% confidence level, significantly exceeding previous limits.

yearjournalcountryeditionlanguage
2011-01-01
10.1016/j.physletb.2010.10.021http://hdl.handle.net/10550/35432