0000000001145877

AUTHOR

A. Dosil Suarez

showing 2 related works from this author

Study of W Boson Production in Association with Beauty and Charm

2015

The associated production of a W boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. The analysis uses data corresponding to integrated luminosities of 1.0 and 2.0  fb[superscript -1] collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, respectively. The W bosons are reconstructed using the W → μν decay and muons with a transverse momentum, p[subscript T], larger than 20 GeV in the pseudorapidity range 2.0 20  GeV and 2.2 20  GeV. The fraction of W + jet events that originate from beauty and charm quarks is measured, along with the charge asymmetries of the W + b and W + c produ…

PartonATLAS DETECTOR01 natural sciencesPRODUCTION CROSS-SECTIONSHigh Energy Physics - ExperimentPhysics Particles & FieldsSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - Experiment (hep-ex)[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Charm (quantum number)Nuclear ExperimentBosonPhysicsPhysicsParticle physics14.70.FmPseudorapidityPhysical Sciences13.87.-aLHCParticle Physics - ExperimentQuarkNuclear and High Energy PhysicsParticle physicsCOLLISIONSAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesLHCb - Abteilung HofmannHadronsAstronomy & AstrophysicsCharm quarkStandard ModelNOJets in large-Q2 scatteringNuclear physicsRATIO0103 physical sciencesSDG 7 - Affordable and Clean Energy010306 general physicsLarge Hadron Collider (France and Switzerland)MuonScience & Technology/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energyROOT-S=7 TEV010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyGran Col·lisionador d'HadronsHEPLHCbJETSW bosonHigh Energy Physics::ExperimentFísica de partículesExperimentsDECAY
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Determination of the $X(3872)$ meson quantum numbers

2013

The quantum numbers of the X(3872) meson are determined to be J(PC) = 1(++) based on angular correlations in B+ -> X(3872)K+ decays, where X(3872) -> pi(+) pi(-) j/psi and J/psi -> pi(+) mu(-). The data correspond to 1.0 fb(-1) of pp collisions collected by the LHCb detector. The only alternative assignment allowed by previous measurements J(PC) = 2(-+) is rejected with a confidence level equivalent to more than 8 Gaussian standard deviations using a likelihood-ratio test in the full angular phase space. This result favors exotic explanations of the X(3872) state.

Particle physicsCOLLISIONSMesonExotic mesonHigh Energy Physics::LatticeGaussian14.40.NdNuclear TheoryGeneral Physics and AstronomyFOS: Physical sciences01 natural sciencesSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentNuclear physicsPhysics and Astronomy (all)symbols.namesakeHigh Energy Physics - Experiment (hep-ex)14.40.RtHadronic decays of bottom meson0103 physical sciences13.25.GvPi[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]CollisionsNuclear Experiment010306 general physicsPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyParticle physicsState (functional analysis)Exotic hadrons Charmonium Hadron ColliderQuantum numberLHCbFIS/01 - FISICA SPERIMENTALEPhase space13.25.HwsymbolsBottom mesons (|B|>0)TetraquarkFísica nuclearHigh Energy Physics::ExperimentLHCFísica de partículesExperimentsFIS/04 - FISICA NUCLEARE E SUBNUCLEAREParticle Physics - ExperimentHadronic decays of J/ψ Υ and other quarkoniaX(3872)
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