Search results for "Compton scattering"

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First measurement of the Sivers asymmetry for gluons using SIDIS data

2017

The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it turned out to be non-zero for quarks. In this letter the evaluation of the Sivers asymmetry for gluons in the same process is presented. The analysis method is based on a Monte Carlo simulation that includes three hard processes: photon-gluon fusion, QCD Compton scattering and leading-order virtual-photon absorption process. The Sivers asymmetries of the three processes are simul…

hadron: angular distributionmuon+: polarized beamNuclear TheoryPartonmuon+ deuteron: deep inelastic scatteringhadron: transverse momentumtransverse momentum dependence01 natural sciencesCOMPASSHigh Energy Physics - ExperimentSubatomär fysikSivers functionHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)photon gluon: fusionSubatomic Physics[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]partonNuclear Experimentmedia_commonQuantum chromodynamicsPhysicsgluon: distribution functiondeep inelastic scattering: semi-inclusive reactionhigher-order: 0polarized target: transversehep-phDeep inelastic scattering; Gluon; PDF; Sivers; TMD; Nuclear and High Energy Physicslcsh:QC1-999High Energy Physics - PhenomenologySivereffect: CollinsNucleonCompton scatteringnumerical calculations: Monte Carlospin: asymmetryParticle Physics - ExperimentDeep inelastic scatteringQuarkParticle physicsNuclear and High Energy Physicsdata analysis methoddeuteron: polarized targethadron: asymmetryangular distribution: asymmetryneural networkmedia_common.quotation_subjectpolarization: longitudinalFOS: Physical sciencesAsymmetryPDFGluonNuclear physics[ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex]0103 physical sciencesquantum chromodynamicsSivers010306 general physicsParticle Physics - Phenomenology010308 nuclear & particles physicshep-ex160 GeV/cHigh Energy Physics::PhenomenologyTMDnucleon: spin: transverseCERN SPSDeep inelastic scatteringGluonmuon+ p: deep inelastic scatteringcorrelation[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph][ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]High Energy Physics::Experimentabsorptionlcsh:PhysicsLeptonexperimental results
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