Published October 2009 | Version v1
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Nucleon form factors with NF=2 twisted mass fermions

Creators

  • 1. Computation-based Science and Technology Research Center, Cyprus Institute, Nicosia (Cyprus)
  • 2. Cyprus Univ., Nicosia (Cyprus). Dept. of Physics
  • 3. Forschungszentrum Juelich (Germany). IAS
  • 4. Forschungszentrum Juelich (Germany). JSC
  • 5. Bergische Univ., Wuppertal (Germany). Fachbereich Physik
  • 6. CEA-Saclay, IRFU/Service de Physique Nucleaire, Gif-sur-Yvette (France)
  • 7. UJF/CNRS/IN2P3, Grenoble (France). Lab. de Physique Subatomique et Cosmologie
  • 8. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). John von Neumann-Inst. fuer Computing NIC

Description

We present results on the electromagnetic and axial nucleon form factors using two degenerate flavors of twisted mass fermions on lattices of spatial size 2.1 fm and 2.7 fm and a lattice spacing of about 0.09 fm. We consider pion masses in the range of 260-470MeV.We chirally extrapolate results on the nucleon axial charge, the isovector Dirac and Pauli root mean squared radii and magnetic moment to the physical point and compare to experiment. (orig.)

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Additional details

Publishing Information

Imprint Pagination
7 p.
ISSN
0418-9833
Report number
DESY--09-176

Conference

Title
27. international symposium on lattice field theory
Acronym
LAT2009
Dates
26-31 Jul 2009
Place
Beijing (China)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
41011619
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
AXIAL-VECTOR CURRENTS; CHIRALITY; EFFECTIVE MASS; ELECTROMAGNETIC FORM FACTORS; EXTRAPOLATION; FLAVOR MODEL; ISOVECTORS; LATTICE FIELD THEORY; MAGNETIC DIPOLE MOMENTS; NUCLEONS; PARTICLE RADII; QUANTUM CHROMODYNAMICS; QUARKS; REST MASS; THEORETICAL DATA
Descriptors DEC
ALGEBRAIC CURRENTS; BARYONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; CURRENTS; DATA; DIMENSIONLESS NUMBERS; DIPOLE MOMENTS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FORM FACTORS; HADRONS; INFORMATION; MAGNETIC MOMENTS; MASS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; NUMERICAL DATA; NUMERICAL SOLUTION; PARTICLE MODELS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; QUARK MODEL; TENSORS; VECTORS

Optional Information

Collaborations
European Twistet Mass Collaboration