Published April 2008 | Version v1
Report Open

Scaling test of two-flavor O(a)-improved lattice QCD

Creators

  • 1. Humboldt-Universitaet, Berlin (Germany). Inst. fuer Physik
  • 2. CERN, Geneva (Switzerland). Physics Dept.
  • 3. Muenster Univ. (Germany). Inst. fuer Theoretische Physik 1
  • 4. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)
  • 5. Massachusetts Institute of Technology, Cambridge, MA (United States). Center for Theoretical Physics
  • 6. Milano-Bicocca Univ. (Italy)

Description

We report on a scaling test of several mesonic observables in the non-perturbatively O(a) improved Wilson theory with two flavors of dynamical quarks. The observables are constructed in a fixed volume of 2.4 fm x (1.8 fm)3 with Schroedinger functional boundary conditions. No significant scaling violations are found. Using the kaon mass determined earlier (L. Del Debbio at al., 2007), we update our estimate of the Lambda parameter to Λ(2)/(MS)/mK=0.52(6). (orig.)

Availability note (English)

Available from INIS in electronic form

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Additional details

Publishing Information

Imprint Pagination
14 p.
ISSN
0418-9833
Report number
DESY--08-043

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
39064798
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BOUNDARY CONDITIONS; COMPUTERIZED SIMULATION; FLAVOR MODEL; FUNCTIONAL ANALYSIS; KAONS; LATTICE FIELD THEORY; QUANTUM CHROMODYNAMICS; QUARKS; REST MASS; SCALE INVARIANCE; SCALING LAWS; SCHROEDINGER PICTURE; SYMMETRY BREAKING
Descriptors DEC
BOSONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; INVARIANCE PRINCIPLES; MASS; MATHEMATICAL MODELS; MATHEMATICS; MESONS; PARTICLE MODELS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; SIMULATION; STRANGE MESONS; STRANGE PARTICLES

Optional Information

Collaborations
ALPHA Collaboration
Secondary number(s)
CERN-PH-TH--2008-079; HU-EP--08-12; MIT-CTP--3942; MS-TP--08-5; SFB/CPP--08-22