Can the total angular momentum of u-quarks in the nucleon be accessed at HERMES?

Can the total angular momentum of u-quarks in the nucleon be accessed at HERMES?

We investigate the possibility of acquiring information on the generalized parton distribution E and, through a model for E, also on the u-quark total angular momentum Ju by studying deeply virtual Compton scattering and hard exclusive ρ0 electroproduction on a transversely polarized hydrogen target...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2006-06, Vol.46 (3), p.729-739
Hauptverfasser: Ellinghaus, F., Nowak, W.-D., Vinnikov, A.V., Ye, Z.
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Sprache:eng
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Angular momentum
Elastic scattering
Nucleons
Partons
Quarks
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container_title The European physical journal. C, Particles and fields
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creator Ellinghaus, F.
Nowak, W.-D.
Vinnikov, A.V.
Ye, Z.
description We investigate the possibility of acquiring information on the generalized parton distribution E and, through a model for E, also on the u-quark total angular momentum Ju by studying deeply virtual Compton scattering and hard exclusive ρ0 electroproduction on a transversely polarized hydrogen target at HERMES. It is found that a change in Ju from zero to 0.4 corresponds to a 4σ (2σ) difference in the calculated transverse target-spin asymmetry in deeply virtual Compton scattering (ρ0 electroproduction), where σ is the total experimental uncertainty.
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subjects Angular momentum
Elastic scattering
Nucleons
Partons
Quarks
title Can the total angular momentum of u-quarks in the nucleon be accessed at HERMES?
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