Published October 2012 | Version v1
Report Open

B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD

Creators

  • 1. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). John von Neumann-Inst. fuer Computing NIC
  • 2. CNRS, Orsay (France)
  • 3. Paris-11 Univ., 91 - Orsay (France). Lab. de Physique Theorique
  • 4. CERN, Geneva (Switzerland). Physics Department
  • 5. Mainz Univ. (Germany). Inst. fuer Kernphysik
  • 6. Humboldt-Universitaet, Berlin (Germany). Inst. fuer Physik
  • 7. Trinity College, Dublin (Ireland). School of Mathematics
  • 8. Muenster Univ. (Germany). Inst. fuer Theoretische Physik 1

Description

We report on the ALPHA Collaboration's lattice B-physics programme based on Nf=2 O(a) improved Wilson fermions and HQET, including all NLO effects in the inverse heavy quark mass, as well as non-perturbative renormalization and matching, to fix the parameters of the effective theory. Our simulations in large physical volume cover 3 lattice spacings a ∼ (0.08-0.05) fm and pion masses down to 190 MeV to control continuum and chiral extrapolations. We present the status of results for the b-quark mass and the B(s)-meson decay constants, fB and fBs.

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Additional details

Publishing Information

Imprint Pagination
7 p.
ISSN
0418-9833
Report number
DESY--12-167

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
44003527
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
B MESONS; B QUARKS; B S MESONS; CHIRALITY; COMPUTERIZED SIMULATION; COUPLING CONSTANTS; EXTRAPOLATION; FLAVOR MODEL; LAGRANGIAN FIELD THEORY; LATTICE FIELD THEORY; LATTICE PARAMETERS; PERTURBATION THEORY; PIONS; QUANTUM CHROMODYNAMICS; RENORMALIZATION; REST MASS; WEAK PARTICLE DECAY
Descriptors DEC
BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; MASS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; MESONS; NUMERICAL SOLUTION; PARTICLE DECAY; PARTICLE MODELS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; QUARKS; SIMULATION; STRANGE MESONS; STRANGE PARTICLES

Optional Information

Collaborations
ALPHA Collaboration
Secondary number(s)
MS-TP--12-13; LPT-Orsay--12-101; CERN-PH-TH--2012-256; HU-EP--12-31; TCDMATH--12-08; SFB-CPP--12-74