Published June 2006 | Version v1
Journal article Metadata-only

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

Creators

  • 1. University of Colorado, Department of Physics, Boulder, Colorado (United States)
  • 2. DESY, Zeuthen (Germany)
  • 3. BLTP JINR, Dubna, Moscow region (Russian Federation)
  • 4. DESY, Hamburg (Germany)

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. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s2006-02529-3

Additional details

Identifiers

DOI
10.1140/epjc/s2006-02529-3;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
46
Journal Issue
3
Journal Page Range
p. 729-739
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
37075662
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
COMPTON EFFECT; DIFFERENTIAL CROSS SECTIONS; DISTRIBUTION FUNCTIONS; ELECTRON-PROTON INTERACTIONS; ELECTRONS; ELECTROPRODUCTION; EXCLUSIVE INTERACTIONS; GLUON MODEL; PARTICLE STRUCTURE; PHOTONS; POLARIZATION-ASYMMETRY RATIO; POLARIZED TARGETS; PROTONS; RHO-770 MESONS; SCATTERING AMPLITUDES; SEMI-INCLUSIVE INTERACTIONS; SPIN; SPIN ORIENTATION; U QUARKS
Descriptors DEC
AMPLITUDES; ANGULAR MOMENTUM; BARYONS; BASIC INTERACTIONS; BOSONS; CROSS SECTIONS; DIMENSIONLESS NUMBERS; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; FUNCTIONS; HADRONS; INCLUSIVE INTERACTIONS; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MESONS; NUCLEONS; ORIENTATION; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; QUARKS; SCATTERING; TARGETS; VECTOR MESONS