Physical Nucleon Form Factors from Lattice QCD

Journal Article · Tue Jul 11 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2220255· OSTI ID:20873296

Matevosyan, Hrayr H ^[1]; Miller, Gerald A ^[2]; Thomas, Anthony W ^[3]

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1. Louisiana State University, Department of Physics and Astronomy, 202 Nicholson Hall, Tower Dr., Baton Rouge, LA 70803 (United States)
2. University of Washington, Department of Physics, Box 351560, Seattle, WA 98195-1560 (United States)
3. Thomas Jefferson National Accelerator Facility, 12000 Jefferson Ave., Newport News, VA 23606 (United States)

We explore the possibility of extrapolating state of the art lattice QCD calculations of nucleon electromagnetic form factors to the physical regime. We find that the lattice results can be reproduced using the Light Front Cloudy Bag Model by letting its parameters be analytic functions of the quark mass. We then use the model to extrapolate the lattice result to the physical value of the pion mass, thereby allowing us to study how the predicted zero in GE(Q2)/GM(Q2) for proton varies as a function of quark mass.

• OSTI ID: 20873296
• Journal Information: AIP Conference Proceedings, Vol. 842, Issue 1; Conference: 17. international conference on particles and nuclei, Santa Fe, NM (United States), 23-30 Oct 2005; Other Information: DOI: 10.1063/1.2220255; (c) 2006 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
ANALYTIC FUNCTIONS
BAG MODEL
ELECTROMAGNETIC FORM FACTORS
LATTICE FIELD THEORY
PIONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARKS
REST MASS