Search results for "DIMUON PRODUCTION"

showing 3 items of 3 documents

EPPS16: Nuclear parton distributions with LHC data

2017

We introduce a global analysis of collinearly factorized nuclear parton distribution functions (PDFs) including, for the first time, data constraints from LHC proton-lead collisions. In comparison to our previous analysis, EPS09, where data only from charged-lepton-nucleus deep inelastic scattering (DIS), Drell-Yan (DY) dilepton production in proton-nucleus collisions and inclusive pion production in deuteron-nucleus collisions were the input, we now increase the variety of data constraints to cover also neutrino-nucleus DIS and low-mass DY production in pion-nucleus collisions. The new LHC data significantly extend the kinematic reach of the data constraints. We now allow much more freedom…

QuarkParticle physicsPhysics and Astronomy (miscellaneous)Nuclear TheoryNuclear TheoryFOS: Physical sciencesPartonhiukkasfysiikka114 Physical sciences01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear Theory (nucl-th)High Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)PionINELASTIC MUON SCATTERINGpartonit0103 physical sciencesNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentPLUS PB COLLISIONSEngineering (miscellaneous)Nuclear ExperimentPhysicsGauge bosonnuclear partonsLarge Hadron Collider010308 nuclear & particles physicsLEADING ORDERHigh Energy Physics::PhenomenologyLEPTON CHARGE ASYMMETRYSTRUCTURE-FUNCTION RATIOSDeep inelastic scatteringPPB COLLISIONSGluonnuclear parton distribution functionsHigh Energy Physics - PhenomenologyDIMUON PRODUCTIONPERTURBATION-THEORYJET CROSS-SECTIONSHigh Energy Physics::ExperimentHADRON-COLLISIONSRegular Article - Theoretical PhysicsNeutrino
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Applicability of pion-nucleus Drell-Yan data in global analysis of nuclear parton distribution functions

2017

Despite the success of modern nuclear parton distribution functions (nPDFs) in describing nuclear hard-process data, they still suffer from large uncertainties. One of the poorly constrained features is the possible asymmetry in nuclear modifications of valence $u$ and $d$ quarks. We study the possibility of using pion-nucleus Drell-Yan dilepton data as a new constraint in the global analysis of nPDFs. We find that the nuclear cross-section ratios from the NA3, NA10 and E615 experiments can be used without imposing significant new theoretical uncertainties and, in particular, that these datasets may have some constraining power on the $u$/$d$ -asymmetry in nuclei.

QuarkDrell-Yan processParticle physicsNuclear and High Energy PhysicsNuclear Theorymedia_common.quotation_subjectNuclear TheoryDrell–Yan processFOS: Physical sciencesPartonhiukkasfysiikka01 natural sciencesAsymmetry114 Physical sciencesHigh Energy Physics - ExperimentNuclear Theory (nucl-th)Nuclear physicsHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)PionRATIO0103 physical sciencesmedicinePion–nucleus scatteringNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentNuclear theoryNuclear Experimentmedia_commonPhysicsta114010308 nuclear & particles physicskvarkitHigh Energy Physics::PhenomenologyDrell–Yan processNuclear parton distribution functionsPion-nucleus scatteringlcsh:QC1-999pion–nucleus scatteringnuclear parton distribution functionsHigh Energy Physics - PhenomenologyDistribution functionmedicine.anatomical_structureDIMUON PRODUCTIONHigh Energy Physics::ExperimentNucleusPDFSlcsh:Physics
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Measurement of dielectron production in central Pb-Pb collisions at √sNN = 2.76 TeV

2019

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. The first measurement of dielectron (e + e −) production in central (0 – 10 %) Pb – Pb collisions at √sNN=2.76TeV at the LHC is presented. The dielectron invariant-mass spectrum is compared to the expected contributions from hadron decays in the invariant-mass range 0 < mee < 3.5 GeV / c2. The ratio of data and the cocktail of hadronic contributions without vacuum ρ0 is measured in the invariant-mass range 0.15 < mee < 0.7 GeV / c2, w…

virtual [photon]:Kjerne- og elementærpartikkelfysikk: 431 [VDP]heavy ion collisionsHadrondielectron productionhiukkasfysiikkaPP01 natural sciencesS-W INTERACTIONSthermalALICEPhysics::Atomic PhysicsNuclear ExperimentBrookhaven RHIC CollPhysicsAU COLLISIONSLarge Hadron Colliderphoton: virtual ; photon: direct production ; heavy ion: scattering ; hadron: decay ; Brookhaven RHIC Coll ; transverse momentum ; CERN LHC Coll ; thermal ; ALICE ; mesonVDP::Kjerne- og elementærpartikkelfysikk: 431DIRECT PHOTON PRODUCTIONddc::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]PRIRODNE ZNANOSTI. Fizika.:Nuclear and elementary particle physics: 431 [VDP]CERN LHC CollVDP::Nuclear and elementary particle physics: 431Transverse momentumNuclear and High Energy PhysicsRho mesondirect production [photon]MesonPAIR PRODUCTIONPhoton lepton & quark productiontransverse momentumFew-body systemsmesonNuclear physicsDIRECT PHOTON PRODUCTION; S-W INTERACTIONS; AU COLLISIONS; RHO-MESON; DIMUON PRODUCTION; PAIR PRODUCTION; PP; J/PSI; ENHANCEMENT; EMISSIONENHANCEMENTscattering [heavy ion]0103 physical sciencesRelativistic heavy-ion collisionsRHO-MESON010306 general physicsParticle & resonance productionNuclear Physicsta114010308 nuclear & particles physics:Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP]NATURAL SCIENCES. Physics.J/PSIPair productionDIMUON PRODUCTIONQuark–gluon plasmaHigh Energy Physics::ExperimentEMISSIONdecay [hadron]
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