0000000000342601

AUTHOR

L. Capriotti

showing 4 related works from this author

First Observation of Top Quark Production in the Forward Region

2015

Top quark production in the forward region in proton-proton collisions is observed for the first time. The W + b final state with W → μν is reconstructed using muons with a transverse momentum, p[subscript T], larger than 25 GeV in the pseudorapidity range 2.0 20  GeV. The results are based on data corresponding to integrated luminosities of 1.0 and 2.0  fb[superscript -1] collected at center-of-mass energies of 7 and 8 TeV by LHCb. The inclusive top quark production cross sections in the fiducial region are σ(top)[7  TeV] = 239 ± 53(stat) ± 33(syst) ± 24(theory)  fb, σ(top)[8  TeV] = 289 ± 43(stat) ± 40(syst) ± 29(theory)  fb.These results, along with the observed differential yields and c…

Top quarkParticle physicsPhysics MultidisciplinaryGeneral Physics and AstronomyFOS: Physical sciences7. Clean energy01 natural sciencesJets in large-Q2 scatteringSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentStandard ModelNONuclear physicsPhysics and Astronomy (all)High Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]RapiditySDG 7 - Affordable and Clean Energy010306 general physicsNuclear ExperimentPhysicslhcbMuon/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energyScience & Technology010308 nuclear & particles physicsPhysicsSettore FIS/01 - Fisica SperimentaleParticle physicsSigmaCharge (physics)Top quarkHEP14.70.FmPseudorapidity13.87.-aPhysical SciencesW boson14.65.HaProduction (computer science)High Energy Physics::ExperimentLHCFísica de partículesExperimentsDECAYParticle Physics - Experiment
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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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First study of the CP-violating phase and decay-width difference in Bs0→ψ(2S)ϕ decays

2016

A time-dependent angular analysis of Bs0→ψ(2S)ϕ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0fb−1 collected during Run 1 of the LHC. The CP-violating phase and decay-width difference of the Bs0 system are measured to be ϕs=0.23−0.28+0.29±0.02rad and ΔΓs=0.066−0.044+0.041±0.007ps−1, respectively, where the first uncertainty is statistical and the second systematic. This is the first time that ϕs and ΔΓs have been measured in a decay containing the ψ(2S) resonance.

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderLuminosity (scattering theory)010308 nuclear & particles physicsPhase (waves)Astrophysics01 natural sciencesResonance (particle physics)Angular distribution0103 physical sciencesCP violation010306 general physicsPhysics Letters B
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Measurement of CP asymmetry in Bs0 → Ds ∓K± decays

2014

Journal of high energy physics 2018(3), 59 (2018). doi:10.1007/JHEP03(2018)059

B physicCKM angle gamma01 natural sciencesB physicsLuminosityFlavor physicsHadron-Hadron scattering (experiments)TOOLLHCb - Abteilung HintonQCmedia_commonPhysicsParticle physicsCharge conjugation parity time reversal and other discrete symmetrie12.15.HhB physics; CKM angle gamma; CP violation; Flavor physics; Hadron-Hadron ScatteringJustice and Strong InstitutionsCP violationB physics; CKM angle gamma; CP violation; Flavor physics; Hadron-Hadron Scattering; Nuclear and High Energy PhysicsFísica nuclearLHCAstrophysics::Earth and Planetary AstrophysicsParticle physicsNuclear and High Energy PhysicsVIOLATIONSDG 16 - PeaceVIOLATION; GAMMA; TOOLAstrophysics::High Energy Astrophysical Phenomenamedia_common.quotation_subject14.40.NdLHCb - Abteilung HofmannAstrophysics::Cosmology and Extragalactic AstrophysicsHadrons530Determination of Cabibbo-Kobayashi & Maskawa (CKM) matrix elementAsymmetryNOHadronic decays of bottom mesonTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY0103 physical scienceslcsh:Nuclear and particle physics. Atomic energy. Radioactivityddc:530010306 general physicsLarge Hadron Collider (France and Switzerland)Astrophysics::Galaxy AstrophysicsHadron-Hadron Scattering010308 nuclear & particles physicsSDG 16 - Peace Justice and Strong InstitutionsGran Col·lisionador d'HadronsGAMMA/dk/atira/pure/sustainabledevelopmentgoals/peace_justice_and_strong_institutionsHEPLHCbFlavor physic13.25.HwB physics; CKM angle gamma; CP violation; Flavor physics; Hadron-Hadron scattering (experiments)lcsh:QC770-798Bottom mesons (|B|>0)11.30.ErHigh Energy Physics::ExperimentB physics CKM angle gamma CP violation Flavor physics Hadron-Hadron ScatteringFísica de partículesExperiments
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