Published September 1, 2008
| Version v1
Journal article
Low energy chiral constants from epsilon-regime simulations with improved Wilson fermions
- 1. Institut fuer Physik, Humboldt Universitaet, Newtonstrasse 15, 12489 Berlin (Germany)
- 2. Bergische Universitaet Wuppertal, Gaussstrasse 20, 42219 Wuppertal (Germany)
- 3. Department of Physics, University of Colorado, Boulder, Colorado 80309-390 (United States)
Description
We present a lattice QCD calculation of the low-energy constants of the leading order chiral Lagrangian. In these simulations the epsilon regime is reached by using tree-level improved nHYP Wilson fermions combined with reweighting in the quark mass. We analyze two point functions on two ensembles with lattices of size (1.85 fm)4 and (2.8 fm)4, and at several quark mass values between 4 and 20 MeV. The data are well fitted with next-to-leading order chiral perturbative formulas and predict F=90(4) MeV and Σ1/3=248(6) MeV in the MS scheme at 2 GeV.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.78.054511;
- arXiv
- arXiv:0806.4586v2;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 78
- Journal Issue
- 5
- Journal Page Range
- p. 054511-054511.9
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41002075
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CHIRALITY; FERMIONS; GEV RANGE 01-10; LAGRANGIAN FUNCTION; LATTICE FIELD THEORY; MASS; MEV RANGE; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; QUARKS; SIMULATION
- Descriptors DEC
- CONSTRUCTIVE FIELD THEORY; ENERGY RANGE; FERMIONS; FIELD THEORIES; FUNCTIONS; GEV RANGE; PARTICLE PROPERTIES; QUANTUM FIELD THEORY
Optional Information
- Notes
- (c) 2008 The American Physical Society