Lattice Calculations of Nucleon Form Factors

Journal Article · Mon Oct 24 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647148· OSTI ID:21608402

Syritsyn, S N ^[1]

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1. Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA, 02139 (United States)

We present recent results of calculation of the isovector electromagnetic and axial form factors of the nucleon using lattice QCD with three different lattice actions and pion masses down to m{sub {pi}} > or approx. 300 MeV. Because of the precision of our high-statistics calculations, we can test predictions of baryon chiral perturbation theory for the charge and axial radii of the nucleon. We find that currently available baryon ChPT calculations disagree with our data, indicating that the corresponding effective theory approximations are not valid above m{sub {pi}{approx_equal}3}00 MeV.

• OSTI ID: 21608402
• Journal Information: AIP Conference Proceedings, Vol. 1374, Issue 1; Conference: MENU 2010: 12. international conference on meson-nucleon physics and the structure of the nucleon, Williamsburg, VA (United States), 31 May - 4 Jun 2010; Other Information: DOI: 10.1063/1.3647148; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
CHIRAL SYMMETRY
CHIRALITY
DIRAC EQUATION
FORM FACTORS
ISOVECTORS
LATTICE FIELD THEORY
MEV RANGE
NUCLEONS
PARTICLE STRUCTURE
PIONS
QUANTUM CHROMODYNAMICS
QUARKS
REST MASS
BARYONS
BOSONS
CALCULATION METHODS
CONSTRUCTIVE FIELD THEORY
DIFFERENTIAL EQUATIONS
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
FIELD EQUATIONS
FIELD THEORIES
HADRONS
MASS
MESONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
SYMMETRY
TENSORS
VECTORS
WAVE EQUATIONS