Search results for "K+: branching ratio"

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Search for pair production of first or second generation leptoquarks in proton-proton collisions at sqrt(s)=7 TeV using the ATLAS detector at the LHC

2011

This paper describes searches for the pair production of first or second generation scalar leptoquarks using 35  pb−1 of proton-proton collision data recorded by the ATLAS detector at √s=7  TeV. Leptoquarks are searched in events with two oppositely-charged muons or electrons and at least two jets, and in events with one muon or electron, missing transverse momentum and at least two jets. After event selection, the observed yields are consistent with the predicted backgrounds. Leptoquark production is excluded at the 95% CL for masses MLQ<376 (319) GeV and MLQ<422 (362) GeV for first and second generation scalar leptoquarks, respectively, when assuming the branching fraction of a leptoquark…

leptoquark: scalar ; leptoquark: branching ratio ; leptoquark: pair production ; transverse momentum: missing-energy ; ATLAS ; CERN LHC Coll ; p p: interaction ; leptoquark: search for ; final state: ((n)jet dilepton) ; final state: ((n)jet lepton) ; background ; leptoquark: mass: lower limit ; channel cross section: upper limit ; experimental results ; 7000 GeV-cmsHeraSu(15) Grand UnificationScience & Technology:Ciências Físicas [Ciências Naturais]Settore FIS/01 - Fisica SperimentaleHigh Energy Physics::PhenomenologyQuarksFísicaddc:500.2Breaking530pair production; leptoquarks;High Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareConstraintsddc:530High Energy Physics::ExperimentFísica nuclearBosonsParticle Physics - ExperimentDetectors de radiacióModel
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