162 citations · 431 across the 11 of their papers we have counts for
7 papers · 1 filter
Bottomonium hyperfine splittings from lattice NRQCD including radiative and relativistic corrections
R. J. Dowdall, C. T. H. Davies, T. Hammant +2
We present a calculation of the hyperfine splittings in bottomonium using lattice Nonrelativistic QCD. The calculation includes spin-dependent relativistic corrections through O(v^…
Radiative improvement of the lattice NRQCD action using the background field method with applications to quarkonium spectroscopy
T. C. Hammant, A. G. Hart, G. M. von Hippel +2
We apply the background field (BF) method to Non-Relativistic QCD (NRQCD) on the lattice in order to determine the one-loop radiative corrections to the coefficients of the NRQCD a…
Radiative improvement of spin and Darwin terms in the NRQCD action
T. C. Hammant, A. G. Hart, G. M. von Hippel +2
We present updated results for the radiative improvement of the σ.B term and the spin-dependent four-fermion terms in the lattice NRQCD action, and first results for the radiative…
Precise heavy-light meson masses and hyperfine splittings from lattice QCD including charm quarks in the sea
R. J. Dowdall, C. T. H. Davies, T. C. Hammant +1
We present improved results for the B and D meson spectrum from lattice QCD including the effect of u/d,s and c quarks in the sea. For the B mesons the Highly Improved Staggered Qu…
The Upsilon spectrum and the determination of the lattice spacing from lattice QCD including charm quarks in the sea
R. J. Dowdall, B. Colquhoun, J. O. Daldrop +8
We give results for the Upsilon spectrum from lattice QCD using an improved version of the NRQCD action for b quarks which includes radiative corrections to kinetic terms at O(v^4)…
Radiative improvement of the lattice NRQCD action using the background field method and application to the hyperfine splitting of quarkonium states
T. C. Hammant, A. G. Hart, G. M. von Hippel +2
We present the first application of the background field method to Non-Relativistic QCD (NRQCD) on the lattice in order to determine the one-loop radiative corrections to the coeff…
Improved automated lattice perturbation theory in background field gauge
T. C. Hammant, R. R. Horgan, C. J. Monahan +5
We present an algorithm to automatically derive Feynman rules for lattice perturbation theory in background field gauge. Vertices with an arbitrary number of both background and qu…