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Measurement of the low-energy antideuteron inelastic cross section

2020

In this Letter, we report the first measurement of the inelastic cross section for antideuteron-nucleus interactions at low particle momenta, covering a range of $0.3 \leq p < 4$ GeV/$c$. The measurement is carried out using p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV, recorded with the ALICE detector at the CERN LHC and utilizing the detector material as an absorber for antideuterons and antiprotons. The extracted raw primary antiparticle-to-particle ratios are compared to the results from detailed ALICE simulations based on the GEANT4 toolkit for the propagation of antiparticles through the detector material. The analysis of th…

interaction [cosmic radiation]MOMENTUM RANGEAntiparticle:Kjerne- og elementærpartikkelfysikk: 431 [VDP]HadronGeneral Physics and AstronomyPROPAGATIONcosmic radiation: interactionhiukkasfysiikkanucl-ex01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)ALICEbenchmarknucleon nucleonHadron-Hadron scattering (experiments)antideuteronmodel: GlauberpropagationAnti-nuclei[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]ABSORPTIONAntimatter; heavy ion reactionsNuclear Experiment (nucl-ex)Nuclear ExperimentNuclear Experimenthadron-hadron scatteringNuclear Physics LHC ALICEPhysicsHadron-Hadron scattering (experiments); antinuclei cross sectionsLarge Hadron Colliderp: spectrumheavy ion reactionsPhysicsspectrum [p]VDP::Kjerne- og elementærpartikkelfysikk: 431antinuclei cross sectionsanti-pddc:3. Good healthPRIRODNE ZNANOSTI. Fizika.:Nuclear and elementary particle physics: 431 [VDP]DEUTERONSantimateriaVDP::Nuclear and elementary particle physics: 431COALESCENCEAntimatterGEANTantinucleus: productionydinfysiikkaParticle Physics - ExperimentPB-PB COLLISIONSAntimatterCERN Labinterpretation of experiments: CERN LHC CollFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Physics and Astronomy(all)114 Physical sciencesdark matterNuclear physicsMomentumCross section (physics)0103 physical sciencesSCATTERINGddc:530Anti-nuclei; ALICE experiment; hadron-hadron scatteringNuclear Physics - Experimentnumerical calculations010306 general physicsHE-4PB-PB COLLISIONS; LIGHT-NUCLEI; MOMENTUM RANGE; GEV-C; ABSORPTION; HE-4; PROPAGATION; COALESCENCE; SCATTERING; DEUTERONShep-exGlauber [model]low-energy antideuteron ; cross sectionALICE experimentparametrizationantiparticleNATURAL SCIENCES. Physics.LIGHT-NUCLEIGEV-CAntiprotonCERN LHC Coll [interpretation of experiments]Elementary Particles and FieldsHigh Energy Physics::Experimentproduction [antinucleus]Glauber
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