171 citations · 694 across the 16 of their papers we have counts for
18 papers · 1 filter
Nonperturbative comparison of clover and HISQ quarks in lattice QCD and the properties of the phi meson
Bipasha Chakraborty, C. T. H. Davies, G. C. Donald +2
We compare correlators for pseudoscalar and vector mesons made from valence strange quarks using the clover quark and highly improved staggered quark (HISQ) formalisms in full latt…
and resonances on the lattice at nearly physical quark masses and
Gunnar S. Bali, Sara Collins, Antonio Cox +4
Working with a pion mass MeV, we study and scattering using two flavours of non-perturbatively improved Wilson fermions at a lattice spacing $a\approx 0.…
The strange and charm quark contributions to the anomalous magnetic moment of the muon from lattice QCD
Jonna Koponen, Bipasha Chakraborty, Christine T. H. Davies +5
We describe a new technique (published in Phys. Rev. D89 114501) to determine the contribution to the anomalous magnetic moment of the muon coming from the hadronic vacuum polarisa…
The strange and charm quark contributions to the anomalous magnetic moment (g -2) of the muon from current-current correlators
Bipasha Chakraborty, Christine Davies, Gordon Donald +5
We describe a new technique (presented in arXiv:1403.1778) to determine the contribution to the anomalous magnetic moment (g-2) of the muon coming from the hadronic vacuum polarisa…
High-precision quark masses and QCD coupling from lattice QCD
Bipasha Chakraborty, C. T. H. Davies, G. C. Donald +6
We present a new lattice QCD analysis of heavy-quark pseudoscalar-pseudoscalar correlators, using gluon configurations from the MILC collaboration that include vacuum polarization…
Strange and charm quark contributions to the anomalous magnetic moment of the muon
Bipasha Chakraborty, C. T. H. Davies, G. C. Donald +4
We describe a new technique to determine the contribution to the anomalous magnetic moment of the muon coming from the hadronic vacuum polarization using lattice QCD. Our method re…
Nonperturbative tests of the renormalization of mixed clover-staggered currents in lattice QCD
Bipasha Chakraborty, Christine Davies, Gordon Donald +3
The Fermilab Lattice and MILC collaborations have shown in one-loop lattice QCD perturbation theory that the renormalization constants of vector and axial-vector mixed clover-asqta…
Bottomonium and B results from full lattice QCD
C. T. H. Davies, B. Colquhoun, B. Galloway +7
We have developed two methods for handling quarks in lattice QCD. One uses NRQCD (now improved to include radiative corrections) and the other uses Highly Improved Staggered Qu…
Prediction of the width from a calculation of its radiative decay in full lattice QCD
G. C. Donald, C. T. H. Davies, J. Koponen +1
We determine the rate for for the first time from lattice QCD and include the full effect of , and sea quarks. The valence quarks are implement…
to and other transitions from lattice QCD
Gordon Donald, Christine Davies, Jonna Koponen
We have studied transitions between vector and pseudoscalar mesons using the HISQ action for the valence quarks. We have calculated all of the axial and vector form factors that ap…
V_cs from D_s to ϕlν semileptonic decay and full lattice QCD
G. C. Donald, C. T. H. Davies, J. Koponen +1
We determine the complete set of axial and vector form factors for the Ds to ϕlν decay from full lattice QCD for the first time. The valence quarks are implemented using the Highly…
The shape of the D -> K semileptonic form factor from full lattice QCD and V_cs
J. Koponen, C. T. H. Davies, G. C. Donald +4
We present a new study of the form factors for D -> K semileptonic decay from lattice QCD that allows us to compare the shape of the vector form factor to experiment and, for the f…
Precision tests of the J/psi from full lattice QCD: mass, leptonic width and radiative decay rate to eta_c
C. T. H. Davies, G. C. Donald, R. J. Dowdall +5
We show results from calculations in full lattice QCD of the mass, leptonic width and radiative decay rate to eta_c of the J/psi meson. These provide few % tests of QCD. Another (1…
D to K and D to pi semileptonic form factors from Lattice QCD
J. Koponen, C. T. H. Davies, G. Donald
We present a very high statistics study of D and D_s semileptonic decay form factors on the lattice. We work with MILC N_f=2+1 lattices and use the Highly Improved Staggered Quark…
Precision tests of the J/ψ from full lattice QCD: mass, leptonic width and radiative decay rate to η_c
G. C. Donald, C. T. H. Davies, R. J. Dowdall +5
We calculate the J/ψ mass, leptonic width and radiative decay rate to γη_c from lattice QCD including u, d and s quarks in the sea for the first time. We use the Highly Improved St…
Axial vector form factors in Ds to phi semileptonic decays from lattice QCD
Gordon Donald, Christine Davies, Jonna Koponen
We calculate axial vector and vector form factors for the semileptonic decay Ds to phi using HISQ valence quarks on MILC ensembles with 2+1 flavours of asqtad sea quarks. Using twi…
The D to K and D to pi semileptonic decay form factors from Lattice QCD
The HPQCD Collaboration, Jonna Koponen, Christine T. H. Davies +5
We present a new and very high statistics study of D and D_s semileptonic decay form factors on the lattice. We work with MILC N_f=2+1 lattices and use the Highly Improved Staggere…
Staggered fermions, zero modes, and flavor-singlet mesons
Gordon C. Donald, Christine T. H. Davies, Eduardo Follana +1
We examine the taste structure of eigenvectors of the staggered-fermion Dirac operator. We derive a set of conditions on the eigenvectors of modes with small eigenvalues (near-zero…