88 citations · 285 across the 19 of their papers we have counts for
19 papers
The measurement, fitting and interpretation of the radial distributions of Heavy-Light mesons calculated on a lattice with dynamical fermions
A. M. Green, J. Koponen, P. Pennanen +1
In our earlier work, the charge and matter radial distributions of heavy-light mesons were measured on a 16^3 times 24 lattice with a lattice spacing of a = 0.17 fm and a light qua…
Hybrid meson decay from the lattice
UKQCD Collaboration, C. McNeile, C. Michael +1
We discuss the allowed decays of a hybrid meson in the heavy quark limit. We deduce that an important decay will be into a heavy quark non-hybrid state and a light quark meson, in…
Radial Correlations between two quarks
UKQCD Collaboration, A. M. Green, J. Koponen +2
In nuclear many-body problems the short-range correlation between two nucleons is well described by the corresponding correlation in the {two}-body problem. Therefore, as a first s…
The Charge and Matter radial distributions of Heavy-Light mesons calculated on a lattice
UKQCD Collaboration, A. M. Green, J. Koponen +2
For a heavy-light meson with a static heavy quark, we can explore the light quark distribution. The charge and matter radial distributions of these heavy-light mesons are measured…
The radial wavefunctions of a heavy-light meson calculated on a lattice
UKQCD Collaboration, A. M. Green, J. Koponen +2
A brief review is given of attempts to understand the energies of four-quark systems calculated on a lattice in terms of nuclear-physics-inspired many-body techniques involving int…
String breaking on a lattice
P. Pennanen
String breaking is a non-perturbative long-distance feature of QCD that is involved in for example meson decays. A mixing analysis of lattice operators at zero temperature gives th…
Interactions of heavy-light mesons
P. Pennanen, C. Michael, A. M. Green
The potential between static-light mesons forming a meson-meson or a meson-antimeson system is calculated in quenched and unquenched SU(3) gauge theory. We use the Sheikholeslami-W…
Can lattice data for two heavy-light mesons be understood in terms of simply two-quark potentials?
A. M. Green, J. Koponen, P. Pennanen
By comparing lattice data for the two heavy-light meson system (Q^2 qbar^2) with a standard many-body approach employing only interquark potentials, it is shown that the use of unm…
A variational fit to the lattice energy of two heavy-light mesons
A. M. Green, J. Koponen, P. Pennanen
Recent lattice calculations on the interaction energy of two heavy-light mesons (Q^2\bar{q}^2) are interpreted in terms of the potential of the corresponding single heavy-light mes…
Two heavy-light mesons on a lattice
UKQCD Collaboration, C. Michael, P. Pennanen
The potential between two heavy-light mesons as a function of the heavy quark separation is calculated in quenched SU(3) lattice QCD. We study the case of heavy-light mesons with a…
Four-quark flux distribution and binding in lattice SU(2)
P. Pennanen, A. M. Green, C. Michael
The full spatial distribution of the color fields of two and four static quarks is measured in lattice SU(2) field theory at separations up to 1 fm at beta=2.4. The four-quark case…
An interquark potential model for multi-quark systems
A. M. Green, P. Pennanen
A potential model for four interacting quarks is constructed in SU(2) from six basis states -- the three partitions into quark pairs, where the gluon field is either in its ground…
A model for multi-quark systems
A. M. Green, P. Pennanen
As a step towards understanding multi-quark systems abundant in nature we construct a model that reproduces the binding energies of static four-quark systems. These energies have b…
Comparing improved actions for SU(2)
Petrus Pennanen, Janne Peisa
In order to help the user in choosing the right action a performance comparison is done for seven improved actions. Six of them are Symanzik improved, one at tree-level and two at…
Flux-tube Structure, Sum Rules and Beta-functions in SU(2)
A. M. Green, P. Pennanen, C. Michael
Action and energy flux-tube profiles are computed, in SU(2) with beta=2.4,2.5, for two quarks up to 1 fm apart and for which the colour fields are in their ground state (A_1g) and…
Flux-tube structure and beta-functions in SU(2)
P. Pennanen, A. M. Green, C. Michael
The spatial distribution of the action and energy in the colour fields of flux-tubes is studied in lattice SU(2) field theory for static quarks at separations up to 1 fm at beta=2.…
Four Quarks from Lattice to the Continuum
Petrus Pennanen
A continuum extrapolation of static four- and two-quark energies calculated in quenched SU(2) is done based on Sommer's method of setting the scale. A model for four-quark energies…
Continuum extrapolation of energies of a four-quark system in lattice gauge theory
Petrus Pennanen
A continuum extrapolation of static two- and four-quark energies calculated in quenched SU(2) lattice Monte Carlo is carried out based on Sommer's method of setting the scale. The…
Four-quark energies in SU(2) lattice Monte Carlo using a tetrahedral geometry
A. M. Green, J. Lukkarinen, P. Pennanen +2
This contribution -- a continuation of earlier work -- reports on recent developments in the calculation and understanding of 4-quark energies generated using lattice Monte Carlo t…