Search results for "transversity and Sivers functions"

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A new measurement of the Collins and Sivers asymmetries on a transversely polarised deuteron target

2007

New high precision measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarised 6LiD target are presented. The data were taken in 2003 and 2004 with the COMPASS spectrometer using the muon beam of the CERN SPS at 160 GeV/c. Both the Collins and Sivers asymmetries turn out to be compatible with zero, within the present statistical errors, which are more than a factor of 2 smaller than those of the published COMPASS results from the 2002 data. The final results from the 2002, 2003 and 2004 runs are compared with naive expectations and with existing model calculations.

QuarkdeuteronNuclear and High Energy PhysicsParticle physicsPhysics::Instrumentation and DetectorsSivers asymmetryHadrontransversity and Sivers functionFOS: Physical sciencesCOMPASS01 natural sciencesHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)nucleon structure; transverse spin and transverse momentum; transversity and Sivers functions; deuteron; COMPASS experimentCompass0103 physical sciencesCOMPASS experimentCollins010306 general physicsNuclear ExperimentCOMPASS experimenttransversityPhysicsLarge Hadron ColliderMuonSpectrometer010308 nuclear & particles physicsScatteringtransversity and Sivers functionsnucleon structureHigh Energy Physics::Experimenttransverse spin and transverse momentumasymmetryParticle Physics - Experimenttransverse single-spin asymmetry
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