Published April 2012 | Version v1
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Charge symmetry breaking in spin dependent parton distributions and the Bjorken sum rule

Creators

  • 1. Adelaide Univ, SA (Australia). CSSM, School of Chemistry and Physics
  • 2. Edinburgh Univ. (United Kingdom). School of Physics and Astronomy
  • 3. Indiana Univ., Bloomington, IN (United States). Dept. of Physics and Center for Exploration of Energy and Matter

Description

We present the rst determination of charge symmetry violation (CSV) in the spin-dependent parton distribution functions of the nucleon. This is done by determining the rst two Mellin moments of the spin-dependent parton distribution functions of the octet baryons from Nf=2+1 lattice simulations. The results are compared with predictions from quark models of nucleon structure. We discuss the contribution of partonic spin CSV to the Bjorken sum rule, which is important because the CSV contributions represent the only partonic corrections to the Bjorken sum rule.

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Additional details

Publishing Information

Imprint Pagination
7 p.
ISSN
0418-9833
Report number
DESY--12-052

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
43052620
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BARYON OCTETS; CHARGE INDEPENDENCE; COMPUTERIZED SIMULATION; CORRECTIONS; DISTRIBUTION FUNCTIONS; FLAVOR MODEL; LATTICE FIELD THEORY; NUCLEONS; PARTICLE STRUCTURE; QUANTUM CHROMODYNAMICS; SPIN ORIENTATION; SUM RULES; SYMMETRY BREAKING
Descriptors DEC
BARYONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FIELD THEORIES; FUNCTIONS; HADRONS; INVARIANCE PRINCIPLES; MATHEMATICAL MODELS; MULTIPLETS; ORIENTATION; PARTICLE MODELS; PARTICLE MULTIPLETS; QUANTUM FIELD THEORY; QUARK MODEL; SIMULATION

Optional Information

Collaborations
CSSM and QCDSF/UKQCD Collaborations
Secondary number(s)
ADP--12-11/T778; Edinburgh--2012-02; LTH--942