Publications (17)
A novel algorithm for computing quark propagators for lattice hadron spectroscopy
J. Bulava, J. Foley, Y. C. Jhang +5
We report on our progress in computing the excitation spectrum in Lattice QCD. We focus on the isospin 0, 1 and 2 channels using the stochastic LapH algorithm for the quark propaga…
Multi-hadron operators with all-to-all quark propagators
J. Bulava, R. Edwards, K. J. Juge +2
Hadron spectroscopy on dynamical configurations are faced with the difficulties of dealing with the mixing of single particle states and multi-hadron states (for large spatial volu…
Progress Report on Computing Excited-State Hadron Masses in Lattice QCD
C. Morningstar, A. Bell, J. Bulava +4
Our progress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Sets of spatially-extended hadron operators with a variety of different momenta ar…
Excited-State Hadrons using the Stochastic LapH Method
C. Morningstar, A. Bell, J. Bulava +4
Progress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Large sets of spatially-extended hadron operators are used. A new method of stochastic…
B-physics with Wilson fermions
F. Bernardoni, B. Blossier, J. Bulava +8
We report the final results of the ALPHA collaboration for some B-physics observables: , and . We employ CLS configurations with 2 flavors of improved Wi…
Two-particle Correlation Functions with Distilled Propagators
J. Bulava, K. J. Juge, C. J. Morningstar +2
Correlation functions of the simplest multi-particle state will be presented using distilled quark propagators. The I=2 pi-pi state can be simulated without computing disconnected…
Master-field simulations of QCD
P. Fritzsch, J. Bulava, M. Cè +3
We report on the first master-field simulations of QCD with 2+1 dynamical quark flavours using non-perturbatively improved stabilised Wilson fermions. Our simulations are performed…
B-physics from HQET in two-flavour lattice QCD
F. Bernardoni, B. Blossier, J. Bulava +8
We present our analysis of B physics quantities using non-perturbatively matched Heavy Quark Effective Theory (HQET) in Nf= 2 lattice QCD on the CLS ensembles. Using all-to-all pro…
Extended hadron and two-hadron operators of definite momentum for spectrum calculations in lattice QCD
C. Morningstar, J. Bulava, B. Fahy +5
Multi-hadron operators are crucial for reliably extracting the masses of excited states lying above multi-hadron thresholds in lattice QCD Monte Carlo calculations. The constructio…
determination in lattice QCD
F. Bahr, F. Bernardoni, B. Blossier +10
The 2012 PDG reports a tension at the level of between two exclusive determinations of . They are obtained by combining the experimental branching ratios of $B \to…
The excited hadron spectrum in lattice QCD using a new variance reduction method
Colin Morningstar, A. Bell, C. Y. Chen +6
Progress in calculating the spectrum of excited baryons and mesons in lattice QCD is described. Correlation matrices of sets of spatially-extended hadron operators have been studie…
The B*Bpi Coupling in the Static Limit
J. Bulava, M. A. Donnellan, Rainer Sommer
We study an accurate method for the lattice calculation of the B*Bpi Coupling in the static limit, paying particular attention to excited state contamination. As this coupling is a…
Decay constants of B-mesons from non-perturbative HQET with two light dynamical quarks
F. Bernardoni, B. Blossier, J. Bulava +8
We present a computation of B-meson decay constants from lattice QCD simulations within the framework of Heavy Quark Effective Theory for the b-quark. The next-to-leading order cor…
The excited hadron spectrum in lattice QCD using a new method of estimating quark propagation
C. Morningstar, A. Bell, J. Bulava +7
Progress in determining the spectrum of excited baryons and mesons in lattice QCD is described. Large sets of carefully-designed hadron operators have been studied and their effect…
Nucleon, and excited states in lattice QCD
J. Bulava, R. G. Edwards, E. Engelson +5
The energies of the excited states of the Nucleon, and are computed in lattice QCD, using two light quarks and one strange quark on anisotropic lattices. The calculation…
Multi-hadron states in Lattice QCD spectroscopy
J. Foley, J. Bulava, K. J. Juge +3
The ability to reliably measure the energy of an excited hadron in Lattice QCD simulations hinges on the accurate determination of all lower-lying energies in the same symmetry cha…
The b-quark mass from non-perturbative Heavy Quark Effective Theory at
F. Bernardoni, B. Blossier, J. Bulava +8
We report our final estimate of the b-quark mass from lattice QCD simulations using Heavy Quark Effective Theory non-perturbatively matched to QCD at . Treating s…