0000000000249784

AUTHOR

Ahmed Ali Abdelalim

showing 4 related works from this author

Search for an excess of events with an identical flavour lepton pair and significant missing transverse momentum in root s=7 TeV proton-proton collis…

2011

Results are presented of a search for supersymmetric particles decaying into final states with significant missing transverse momentum and exactly two identical flavour leptons (e or mu) of opposite charge in sqrt{s}=7 TeV collisions at the Large Hadron Collider. This channel is particularly sensitive to supersymmetric particle cascade decays producing flavour correlated lepton pairs. Flavour uncorrelated backgrounds are subtracted using a sample of opposite flavour lepton pair events. Observation of an excess beyond Standard Model expectations following this subtraction procedure would offer one of the best routes to measuring the masses of supersymmetric particles. In a data sample corres…

Particle physicsPhysics and Astronomy (miscellaneous)Physics beyond the Standard ModelFlavourSupergauge TransformationsFOS: Physical sciencesddc:500.2Parameter space01 natural sciences530Settore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)Pionsparticle: cascade decay ; sparticle: search for ; electron: pair production ; muon: pair production ; p p: inelastic scattering ; transverse momentum: missing-energy ; supersymmetry: parameter space ; CERN LHC Coll ; new physics ; ATLAS ; dilepton: mass spectrum ; experimental results ; 7000 GeV-cmsPions0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]FysikHigh Energy Physics010306 general physicsEngineering (miscellaneous)PhysicsLarge Hadron ColliderScience & TechnologyATLAS detector010308 nuclear & particles physicsSettore FIS/01 - Fisica SperimentaleHigh Energy Physics::PhenomenologyATLASGeneratorsCascadeTransverse momentumPhysical SciencesExperimental High Energy PhysicsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGFísica nuclearHigh Energy Physics::ExperimentLHCParticle Physics - ExperimentLeptonModel
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Measurements ofWγandZγproduction inppcollisions ats=7  TeVwith the ATLAS detector at the LHC

2013

The integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high-energy photon are measured using pp collisions at root s = 7 TeV. The analyse ...

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderPhoton010308 nuclear & particles physicsAtlas detectorHigh Energy Physics::PhenomenologyTevatronTechnicolor01 natural sciences7. Clean energyNuclear physicsmedicine.anatomical_structureAtlas (anatomy)0103 physical sciencesmedicine010306 general physicsBosonPhysical Review D
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Measurement of hard double-parton interactions inW(???) + 2-jet events at $\sqrt{s}\,=7$ TeV with the ATLAS detector

2013

The production of W bosons in association with two jets in proton–proton collisions at a centre-of-mass energy of √s=7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36 pb[superscript −1], collected with the ATLAS detector at the Large Hadron Collider. The fraction of events arising from double-parton interactions, f[superscript (D) over subscript DP], has been measured through the p[subscript T] balance between the two jets and amounts to f[superscript (D) over subscript DP] = 0.08 ± 0.01 (stat.) ± 0.02 (sys.) for jets with transverse momentum p[subscript T] > 20 GeV and rapidity |y| < 2.8. This corresponds to a …

Hard-partonCiencias FísicasGeneral Physics and AstronomyParton7. Clean energy01 natural sciencesHigh Energy Physics - Experimentlaw.inventionVector bosonScattering//purl.org/becyt/ford/1 [https]law[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]w bosonNuclear ExperimentQCBosonddc:539PhysicsLuminosity (scattering theory)Large Hadron ColliderSettore FIS/01 - Fisica SperimentaleATLAShard double-parton interactions; ATLAS detectorProbemedicine.anatomical_structureHadronic CollisionsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGLHCCIENCIAS NATURALES Y EXACTASParticle Physics - ExperimentParticle physicsMultiparton InteractionsCiências Naturais::Ciências Físicas530 PhysicsAstrophysics::High Energy Astrophysical Phenomena:Ciências Físicas [Ciências Naturais]ddc:500.25304-Jet EventsNuclear physicsAtlas (anatomy)0103 physical sciencesmedicineddc:530RapidityHigh Energy Physics010306 general physicsColliderCiencias ExactasCalorimeterScience & TechnologyATLAS detector010308 nuclear & particles physicsMeasurementsHigh Energy Physics::PhenomenologyFísica//purl.org/becyt/ford/1.3 [https]QCDAstronomíaHADRON-HADRON COLLISIONSExperimental High Energy Physicsproton-proton collisionsHigh Energy Physics::ExperimentCollider
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Measurement of upsilon production in 7 TeV pp collisions at ATLAS

2013

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM

Prompt J/Psi ProductionUpsilon meson01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)Polarization[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Nuclear ExperimentQCQuantum chromodynamicsPhysicsLarge Hadron ColliderHeavy QuarkoniumSettore FIS/01 - Fisica SperimentaleCharmonium ProductionATLASJ-PsiHelicityLarge Hadron ColliderHadronic CollisionsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGLHCpp collisionsParticle Physics - ExperimentNuclear and High Energy PhysicsParticle physicsMesonCiências Naturais::Ciências Físicas530 PhysicsGluons:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesddc:500.2upsilon production; pp collisions ; ATLAS; detector530Nuclear physics0103 physical sciencesddc:530RapidityHigh Energy Physics010306 general physicsScience & TechnologyATLAS detector010308 nuclear & particles physicsBranching fractionFísicaQCDGluonOctet Quarkonia ProductionHADRON-HADRON COLLISIONSRoot-S=7 TevExperimental High Energy PhysicsHigh Energy Physics::ExperimentHeavy quarkonia
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