162 citations · 431 across the 11 of their papers we have counts for
12 papers
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…
Aspects of One-Dimensional Coulomb Gases
Ronald R. Horgan, David S. Dean, Vincent Démery +3
In this short review, we discuss recent advances in exact solutions of models based on a one- dimensional (1D) Coulomb gas by means of field-theoretic functional integral methods.…
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…
Wrapping Transition and Wrapping-Mediated Interactions for Discrete Binding along an Elastic Filament: An Exact Solution
David S. Dean, Thomas C. Hammant, Ronald R. Horgan +2
The wrapping equilibria of one and two adsorbing cylinders are studied along a semi-flexible filament (polymer) due to the interplay between elastic rigidity and short-range adhesi…
The one dimensional Coulomb lattice fluid capacitor
Vincent Demery, David S. Dean, Thomas C. Hammant +2
The one dimensional Coulomb lattice fluid in a capacitor configuration is studied. The model is formally exactly soluble via a transfer operator method within a field theoretic rep…
Calculation of the One W Loop Decay Amplitude with a Lattice Regulator
Francis Bursa, Aleksey Cherman, Thomas C. Hammant +2
There has been a controversial recent claim that the standard result on the Higgs to two photon decay rate is incorrect, with the use of dimensional regularization fingered as the…
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)…
Overscreening in 1D lattice Coulomb gas model of ionic liquids
Vincent Demery, David S. Dean, Thomas C. Hammant +2
Overscreening in the charge distribution of ionic liquids at electrified interfaces is shown to proceed from purely electrostatic and steric interactions in an exactly soluble one…
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…