Search results for "QCD corrections"

showing 7 items of 7 documents

Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

2013

We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portu…

Standard Modeldilepton: mass spectrumCiencias Físicas01 natural sciences7. Clean energySettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentHiggs particle: hadroproduction//purl.org/becyt/ford/1 [https]High Energy Physics - Experiment (hep-ex)vector boson: fusion[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]QCBosonPhysicsHIGGS BOSONLarge Hadron Collidervector boson: pair productiontransverse energy: missing-energy4. EducationATLAS experimentSettore FIS/01 - Fisica SperimentaleATLAS3. Good healthMassless particleCERN LHC CollHiggs particle: massPhysical SciencesComputingMethodologies_DOCUMENTANDTEXTPROCESSINGHiggs boson7000: 8000 GeV-cmsFísica nuclearAtlasLhcNeutrinoHiggs particle: decay modesParticle Physics - ExperimentCIENCIAS NATURALES Y EXACTASp p: scatteringNuclear and High Energy PhysicsParticle physicsmass spectrum: (4lepton)530 PhysicsCiências Naturais::Ciências Físicas:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesddc:500.2ATLASdetector; LHC; Higgsbosonproduction; diboson530Massless ParticlesNnlo QCDNuclear physics0103 physical sciencesFysikddc:530High Energy Physics010306 general physicsTransverse-MomentumCondensed Matter::Quantum GasesHiggs particle: couplingScience & Technologyhep-ex010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFísicaQCD CorrectionsFermion//purl.org/becyt/ford/1.3 [https]Hadron CollidersDiboson ProductionAstronomíavector boson: leptonic decayHADRON-HADRON COLLISIONSProton-Proton CollisionsRoot-S=7 TevHiggs particle: hadroproduction ; Higgs particle: coupling ; vector boson: fusion ; p p: scattering ; CERN LHC Coll ; ATLAS ; Higgs particle: decay modes ; vector boson: pair production ; vector boson: leptonic decay ; mass spectrum: two-photon ; mass spectrum: (4lepton) ; dilepton: mass spectrum ; transverse energy: missing-energy ; Higgs particle: mass ; experimental results ; 7000: 8000 GeV-cmsExperimental High Energy PhysicsHigh Energy Physics::ExperimentCross-Sectionsmass spectrum: two-photonexperimental resultsLeptonBroken Symmetries
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Scalar particle contribution to Higgs production via gluon fusion at NLO

2007

22 pages, 5 figures.-- ISI Article Identifier: 000252243700095.-- ArXiv pre-print available at: http://arxiv.org/abs/0709.4227

Nuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeScalar (mathematics)Adjoint representationFOS: Physical sciencesProton-proton collisionsHiggs sectorHigh Energy Physics - Phenomenology (hep-ph)Supersymmetric spectraBoson productionNLO ComputationsHadronic CollidersPhysicsQuantum chromodynamicsGluinoLogarithmic correctionsHigh Energy Physics::PhenomenologyScalar bosonGluonHigh Energy Physics - PhenomenologyQCD correctionsSupersymmetry Phenomenology2-loop Electroweak correctionsHiggs bosonHigh Energy Physics::ExperimentHadron-hadron collisionsJournal of High Energy Physics
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VBFNLO: A parton level Monte Carlo for processes with electroweak bosons

2009

VBFNLO is a fully flexible parton level Monte Carlo program for the simulation of vector boson fusion, double and triple vector boson production in hadronic collisions at next-to-leading order in the strong Coupling constant. VBFNLO includes Higgs and vector boson decays with full spin correlations and all off-shell effects. In addition, VBFNLO implements CP-even and CP-odd Higgs boson via gluon fusion, associated with two jets, at the leading-order one-loop level with the full top- and bottom-quark mass dependence in a generic two-Higgs-doublet model. A variety of effects arising from beyond the Standard Model physics are implemented for selected processes. This includes anomalous coupling…

Particle physics530 PhysicsPhysics beyond the Standard ModelMonte Carlo methodGeneral Physics and AstronomyFOS: Physical sciencesPartonVector bosonHigh Energy Physics - Phenomenology (hep-ph)Electroweak bosonsloop QCD correctionsVBFNLOOne-loop QCD correctionsBosonPhysics1708 Hardware and ArchitectureHadronic collisionsElectroweak interactionHigh Energy Physics::Phenomenology3100 General Physics and AstronomyGluonHigh Energy Physics - PhenomenologyNLO Monte Carlo programHardware and Architecture10231 Institute for Computational ScienceHiggs bosonOneHigh Energy Physics::Experiment
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Inclusive Search for Standard Model Higgs Boson Production in the WW Decay Channel using the CDF II Detector

2010

We present a search for standard model (SM) Higgs boson production using p (p) over bar collision data at root s = 1. 96 TeV, collected with the CDF II detector and corresponding to an integrated luminosity of 4. 8 fb(-1). We search for Higgs bosons produced in all processes with a significant production rate and decaying to two W bosons. We find no evidence for SM Higgs boson production and place upper limits at the 95% confidence level on the SM production cross section (sigma(H)) for values of the Higgs boson mass (m(H)) in the range from 110 to 200 GeV. These limits are the most stringent for m(H) > 130 GeV and are 1.29 above the predicted value of sigma(H) for m(H) 165 GeV.

COLLISIONSParticle physicsZ-GAMMA PRODUCTION; HADRON COLLIDERS; QCD CORRECTIONS; NNLO QCD; COLLISIONS; FERMILABGeneral Physics and AstronomyLibrary scienceFOS: Physical sciencesddc:500.2114 Physical sciences01 natural sciencesZ-GAMMA PRODUCTIONBildungWorld classHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)NNLO QCDBasic research0103 physical sciencesHADRON COLLIDERSFERMILAB010306 general physicsChinaPhysicshep-ex010308 nuclear & particles physicsPhysicsHigh Energy Physics::Phenomenology3. Good healthChristian ministryHigh Energy Physics::ExperimentQCD CORRECTIONS
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A Theoretical Prediction of the Bs-Meson Lifetime Difference

2000

We present the results of a quenched lattice calculation of the operator matrix elements relevant for predicting the Bs width difference. Our main result is (\Delta\Gamma_Bs/\Gamma_Bs)= (4.7 +/- 1.5 +/- 1.6) 10^(-2), obtained from the ratio of matrix elements, R(m_b)=/=-0.93(3)^(+0.00)_(-0.01). R(m_b) was evaluated from the two relevant B-parameters, B_S^{MSbar}(m_b)=0.86(2)^(+0.02)_(-0.03) and B_Bs^{MSbar}(m_b) = 0.91(3)^(+0.00)_(-0.06), which we computed in our simulation.

PhysicsParticle physicsNONPERTURBATIVE RENORMALIZATIONPhysics and Astronomy (miscellaneous)MesonHigh Energy Physics - Lattice (hep-lat)Analytical chemistryFOS: Physical sciencesPartícules (Física nuclear)Settore FIS/02 - Fisica Teorica Modelli e Metodi MatematiciHigh Energy Physics - PhenomenologyOperator matrixMATRIX-ELEMENTSHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Lattice (order)Engineering (miscellaneous)QCD CORRECTIONSTO-LEADING ORDER
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Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II

2010

8 páginas, 3 figuras.-- PACS numbers: 12.60.Jv, 13.85.Rm, 13.85.Qk, 14.80.Ly.-- CDF Collaboration: et al.

Particle physicsMODELSFOS: Physical sciencesGeneral Physics and Astronomyddc:500.2GAMMA PRODUCTIONKinetic energy114 Physical sciencesE(+)E(-) COLLISIONS; HADRON COLLIDERS; GAMMA PRODUCTION; QCD CORRECTIONS; PHOTON; COUPLINGS; PHYSICS; MODELS; TEV01 natural sciencesHigh Energy Physics - ExperimentStandard ModelPHYSICSNuclear physicsHigh Energy Physics - Experiment (hep-ex)E(+)E(-) COLLISIONS0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Grand Unified TheoryHADRON COLLIDERSSymmetry breakingQuantum field theory010306 general physicsPhysics010308 nuclear & particles physicsPhysicsHigh Energy Physics::PhenomenologySupersymmetryCOUPLINGSTransverse planePHOTONTEVHigh Energy Physics::ExperimentGravitinoQCD CORRECTIONS13.85.Rm 12.60.Jv 13.85.Qk 14.80.Ly
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Power Corrections to Event Shapes with Mass-Dependent Operators

2013

We introduce an operator depending on the "transverse velocity'' r that describes the effect of hadron masses on the leading 1/Q power correction to event-shape observables. Here, Q is the scale of the hard collision. This work builds on earlier studies of mass effects by Salam and Wicke [J. High Energy Phys. 05 (2001) 061] and of operators by Lee and Sterman [Phys. Rev. D 75, 014022 (2007)]. Despite the fact that different event shapes have different hadron mass dependence, we provide a simple method to identify universality classes of event shapes whose power corrections depend on a common nonperturbative parameter. We also develop an operator basis to show that at a fixed value of Q, the…

Nuclear and High Energy PhysicsParticle physicsExponentiationFOS: Physical sciences01 natural sciencesOperator (computer programming)High Energy Physics - Phenomenology (hep-ph)Factorization0103 physical sciencesRenormalonsResummationFactorization010306 general physicsMathematical physicsPhysicsQuantum chromodynamics010308 nuclear & particles physicsMultiplicative functionObservableUniversality (dynamical systems)HadronizationHigh Energy Physics - PhenomenologyQCD correctionsE&E-annihilationDistributionsResummationJet cross-sectionsQuantum chromodynamics
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