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Hadron spectroscopy of twisted mass lattice QCD at beta = 6.0
UKQCD collaboration, Craig McNeile, Chris Michael
Simulations that use the clover action in quenched QCD calculations have a lower limit to the quark mass that can be reached, because of the fluctuations caused by exceptional conf…
The strangeness content of the nucleon
C. Michael, C. McNeile, D. Hepburn +1
We evaluate the matrix element of in hadron states on a lattice. We find substantial mixing of the connected and disconnected contributions so that the lattice result t…
Lattice results for the decay constant of heavy-light vector mesons
C. Bernard, P. Williams, S. Datta +7
We compute the leptonic decay constants of heavy-light vector mesons in the quenched approximation. The reliability of lattice computations for heavy quarks is checked by comparing…
Is the up-quark massless?
UKQCD Collaboration, A. C. Irving, C. McNeile +3
We report on determinations of the low-energy constants alpha5 and alpha8 in the effective chiral Lagrangian at O(p^4), using lattice simulations with N_f=2 flavours of dynamical q…
Effects of non-perturbatively improved dynamical fermions in QCD at fixed lattice spacing
UKQCD Collaboration, C. R. Allton, S. P. Booth +17
We present results for the static inter-quark potential, lightest glueballs, light hadron spectrum and topological susceptibility using a non-perturbatively improved action on a $1…