6 papers
Unquenched Charmonium with NRQCD - Lattice 2000
Chris Stewart, Roman Koniuk
We present results from a series of NRQCD simulations of the charmonium system, both in the quenched approximation and with n_f = 2 dynamical quarks. The spectra show evidence for…
Unquenched Charmonium with NRQCD
Chris Stewart, Roman Koniuk
We present the results from a series of lattice simulations of the charmonium system using a highly-improved NRQCD action, both in the quenched approximation, and with n_f = 2 ligh…
Pushing NRQCD to the limit
Chris Stewart, Roman Koniuk
Lattice NRQCD has proven successful in describing the physics of the upsilon system and B-mesons, though some concerns arise when it is used in simulations of charm quarks. It is c…
String-breaking in quenched QCD
Chris Stewart, Roman Koniuk
We present results on a new operator for the investigation of string-breaking effects in quenched SU(2)-colour QCD. The ground state of a spatially-separated static-light meson-ant…
String Breaking in Quenched QCD
Chris Stewart, Roman Koniuk
We present preliminary quenched results on a new operator for the investigation of string-breaking within SU(2)-colour QCD. The ground-state of a spatially-separated static-light m…
Hadronic Molecules in Lattice QCD
Chris Stewart, Roman Koniuk
An adiabatic approximation is used to derive the binding potential between two heavy-light mesons in quenched SU(2)-colour lattice QCD. Analysis of the meson-meson system shows tha…