6533b85efe1ef96bd12bfc63

RESEARCH PRODUCT

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

Nicolas GarronJohn BulavaJochen HeitgerBenoit BlossierFabio BernardoniHubert SimmaMichele Della MortePatrick FritzschGeorg M. Von HippelAntoine Gérardin

subject

QuarkNuclear and High Energy PhysicsParticle physicsMesonHigh Energy Physics::LatticeFOS: Physical sciences01 natural sciencesRenormalizationHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - LatticePionLattice (order)0103 physical sciencesEffective field theoryNuclear Experiment010306 general physicsPhysics[PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat]010308 nuclear & particles physicsHigh Energy Physics - Lattice (hep-lat)High Energy Physics::PhenomenologyParticle Physics - LatticeFermionLattice QCDAtomic and Molecular Physics and OpticsHigh Energy Physics - Phenomenology[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]High Energy Physics::Experiment

description

We report on the ALPHA Collaboration's lattice B-physics programme based on N_f=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, f_B and f_{B_s}.

https://bib-pubdb1.desy.de/record/140266