Published October 2001 | Version v1
Report Metadata-only

The spin structure of the Λ hyperon in quenched lattice QCD

Creators

  • 1. Regensburg Univ. (Germany). Inst. fuer Physik 1 - Theoretische Physik
  • 2. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). John von Neumann-Inst. fuer Computing NIC
  • 3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

Description

It has been suggested to use the production of Λ hyperons for investigating the nucleon spin structure. The viability of this idea depends crucially on the spin structure of the Λ. Using nonperturbatively O(a) improved Wilson fermions in the quenched approximation we have studied matrix elements of two-quark operators in the Λ. We present results for the axial vector current, which give us the contributions of the u, d, and s quarks to the Λ spin. (orig.)

Availability note (English)

Available from TIB Hannover: RA 2999(010144)

Additional details

Publishing Information

Imprint Pagination
3 p.
ISSN
0418-9833
Report number
DESY--01-144

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
33004482
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
AXIAL-VECTOR CURRENTS; FIELD OPERATORS; FLAVOR MODEL; LAMBDA PARTICLES; LATTICE FIELD THEORY; MATRIX ELEMENTS; PARTICLE STRUCTURE; QUANTUM CHROMODYNAMICS; QUARKS; REST MASS; SPIN ORIENTATION; SPINOR FIELDS; TWO-BODY PROBLEM
Descriptors DEC
ALGEBRAIC CURRENTS; BARYONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; CURRENTS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; HYPERONS; LAMBDA BARYONS; MANY-BODY PROBLEM; MASS; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; ORIENTATION; PARTICLE MODELS; QUANTUM FIELD THEORY; QUANTUM OPERATORS; QUARK MODEL; STRANGE PARTICLES

Optional Information

Collaborations
QCDSF Collaboration
Secondary number(s)
HEP-LAT--0110057