Search results for "electron positron"

showing 2 items of 92 documents

$\Lambda_c^{\pm}$ production in pp collisions with a new fragmentation function

2020

Physical review / D D 101(11), 114021 (2020). doi:10.1103/PhysRevD.101.114021

p p: scatteringLambda/c+: productiondata analysis methodPhysics::Instrumentation and Detectors14.40.NdBELLEannihilation [electron positron]electron positron: annihilationfragmentation [charm]530fragmentation functionquarkALICEfragmentationscattering [p p]ddc:530charm: fragmentationStrong InteractionsNuclear Experimentproduction [Lambda/c+]OPALCMSviolation [universality]High Energy Physics::PhenomenologytensionLHC-B12.39.StHigh Energy Physics - Phenomenology12.38.BxCERN LHC Coll[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]High Energy Physics::Experimentuniversality: violation13.85.Ni
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Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory

2019

The profile of the longitudinal development of showers produced by ultra-high energy cosmic rays carries information related to the interaction properties of the primary particles with atmospheric nuclei. In this work, we present the first measurement of the average shower profile in traversed atmospheric depth at the Pierre Auger Observatory. The shapes of profiles are well reproduced by the Gaisser-Hillas parametrization within the range studied, for E>10 17.8 eV .A detailed analysis of the systematic uncertainties is performed using ten years of data and a full detector simulation. The average shape is quantified using two variables related to the width and asymmetry of the profile, and …

p: showersphoton: Cherenkovinteraction: modelAstronomyHadronpiastro-ph.HE; astro-ph.HE01 natural sciencesnitrogenironParametrization (atmospheric modeling)Monte Carlomedia_commonPhysicsastro-ph.HEHigh Energy Astrophysical Phenomena (astro-ph.HE)Range (particle radiation)photomultiplierSettore FIS/01 - Fisica SperimentaleDetectorAstrophysics::Instrumentation and Methods for AstrophysicsDETETOREScosmic rays detectors; ultra high energy cosmic rays; Astronomy and AstrophysicsAugerobservatorycosmic rays detectorscosmic rays detectors; ultra high energy cosmic raysgeometricalAstrophysics - High Energy Astrophysical PhenomenaasymmetrylongitudinalCherenkov counter: waterairmedia_common.quotation_subjectAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesCosmic rayheliumultra high energy cosmic raysnucleus: atmosphereAsymmetry0103 physical sciencesHigh Energy Physicscosmic radiation: UHEcosmic rays detectorFLUORESCENCEAstrophysiquePierre Auger Observatoryelectron positronshowers: atmosphere010308 nuclear & particles physicsbackgrounddetector: surfaceshowers: spatial distributionparametrizationAstronomy and AstrophysicsAstronomieComputational physics13. Climate actiongamma rayExperimental High Energy Physics[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Energy (signal processing)Journal of Cosmology and Astroparticle Physics
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