0000000000770317

AUTHOR

J Marzec

showing 3 related works from this author

Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector

2014

The T2K experiment has reported the first observation of the appearance of electron neutrinos in a muon neutrino beam. The main and irreducible background to the appearance signal comes from the presence in the neutrino beam of a small intrinsic component of electron neutrinos originating from muon and kaon decays. In T2K, this component is expected to represent 1.2% of the total neutrino flux. A measurement of this component using the near detector (ND280), located 280 m from the target, is presented. The charged current interactions of electron neutrinos are selected by combining the particle identification capabilities of both the time projection chambers and electromagnetic calorimeters…

Nuclear and High Energy PhysicsParticle physicsPhysics::Instrumentation and DetectorsSolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciences01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicsNeutrino oscillationPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyT2K experimentFísicaSolar neutrino problem3. Good healthCosmic neutrino backgroundNeutrino detectorMeasurements of neutrino speedHigh Energy Physics::ExperimentNeutrino
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Measurement of Neutrino Oscillation Parameters from Muon Neutrino Disappearance with an Off-Axis Beam

2013

The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01 x 10(20) protons on target. In the absence of neutrino oscillations, 205 +/- 17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin…

Particle physicsPhysics::Instrumentation and DetectorsSolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaGeneral Physics and AstronomyFluxFOS: Physical sciencesddc:500.201 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Muon neutrino010306 general physicsNeutrino oscillationPhysics010308 nuclear & particles physics4. EducationHigh Energy Physics::PhenomenologyDetectorSolar neutrino problemNeutrino detectorMeasurements of neutrino speedFísica nuclearHigh Energy Physics::ExperimentNeutrino
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Analysis of the impact of sex and age on the variation in the prevalence of antinuclear autoantibodies in Polish population: a nationwide observation…

2022

AbstractThe detection of antinuclear autoantibody (ANA) is dependent on many factors and varies between the populations. The aim of the study was first to assess the prevalence of ANA in the Polish adult population depending on age, sex and the cutoff threshold used for the results obtained. Second, we estimated the occurrence of individual types of ANA-staining patterns. We tested 1731 patient samples using commercially available IIFA using two cutoff thresholds of 1:100 and 1:160. We found ANA in 260 participants (15.0%), but the percentage of positive results strongly depended on the cutoff level. For a cutoff threshold 1:100, the positive population was 19.5% and for the 1:160 cutoff th…

musculoskeletal diseasesAdultMaleRMAnti-nuclear antibodyCross-sectional studyIndirect immunofluorescence assayImmunologyPopulationAdult populationPolish populationObservational ResearchAutoimmune DiseasesAgeSex FactorsRheumatologyCutof thresholdPrevalenceImmunology and AllergyCutoffMedicineHumanseducationskin and connective tissue diseasesQH426education.field_of_studybusiness.industryAutoantibodyAge FactorsMiddle AgedQRCutoff thresholdstomatognathic diseasesAntinuclear antibodiesCross-Sectional StudiesIndirect immunofuorescence assayAntibodies AntinuclearQR180Observational studySexFemalePolandbusinessDemographyRheumatology International
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