Browsing Pure & Applied Mathematics by Author "PEARDON, MICHAEL"
Now showing items 1-16 of 16
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Charmonium spectroscopy from an anisotropic lattice study
RYAN, SINEAD; LIU, LIUMING; PEARDON, MICHAEL; VILASECA MAINAR, POL (2011)We present a progress report on our study of the charmonium spectrum in full QCD on anisotropic lattices generated by the Hadron Spectrum Collaboration. We adopt a large basis of interpolating operators to extract the ... -
Coupled-channel DÏ , Dη and D<inf>s</inf>K¯ scattering from lattice QCD
RYAN, SINEAD; PEARDON, MICHAEL (2016)We present the rst lattice QCD study of coupled-channel D , D and D s K scattering in isospin-1/2 in three partial waves. Using distillation, we compute matrices of correlation functions with bases of ... -
Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD
RYAN, SINEAD; PEARDON, MICHAEL (2016)The quark-line disconnected diagram is a potentially important ingredient in lattice QCD calculations of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. It is also a notoriously ... -
Excited and exotic charmonium, D<inf>s</inf> and D meson spectra for two light quark masses from lattice QCD
RYAN, SINEAD; PEARDON, MICHAEL (2016)We present highly-excited charmonium, D s and D meson spectra from dy- namical lattice QCD calculations with light quarks corresponding to M 240 MeV and compare these to previous results with M ... -
Excited-state spectroscopy of singly, doubly and triply-charmed baryons from lattice QCD
PEARDON, MICHAEL (2013)We present the ground and excited state spectra of singly, doubly and triply-charmed baryons by using dynamical lattice QCD. A large set of baryonic operators that respect the symmetries of the lattice and are obtained ... -
First results from 2+1 dynamical quark flavors on an anisotropic lattice: Light-hadron spectroscopy and setting the strange-quark mass
PEARDON, MICHAEL; RYAN, SINEAD (2009)We present the first light-hadron spectroscopy on a set of N f ? 2 ? 1 dynamical, anisotropic lattices. A convenient set of coordinates that parameterize the two-dimensional plane of light and strange-quark masses ... -
Highly excited and exotic meson spectrum from dynamical lattice QCD
PEARDON, MICHAEL; THOMAS, CHRISTOPHER (2009)Using a new quark-field construction algorithm and a large variational basis of operators, we extract a highly excited isovector meson spectrum on dynamical anisotropic lattices. We show how carefully constructed operators ... -
Improved stochastic estimation of quark propagation with Laplacian Heaviside smearing in lattice QCD
PEARDON, MICHAEL (2011)A new method of stochastically estimating the low-lying effects of quark propagation is proposed which allows accurate determinations of temporal correlations of single-hadron and multihadron operators in lattice QCD. The ... -
Isoscalar meson spectroscopy from lattice QCD
PEARDON, MICHAEL; THOMAS, CHRISTOPHER (2011)We extract to high statistical precision an excited spectrum of single-particle isoscalar mesons using lattice QCD, including states of high spin and, for the first time, light exotic J(PC) isoscalars. The use of a novel ... -
A Novel quark-field creation operator construction for hadronic physics in lattice QCD
PEARDON, MICHAEL (2009)A new quark-field smearing algorithm is defined which enables efficient calculations of a broad range of hadron correlation functions. The technique applies a low-rank operator to define smooth fields that are to be used ... -
Phase shift of isospin-2 pi pi scattering from lattice QCD
PEARDON, MICHAEL; THOMAS, CHRISTOPHER (2011)Finite-volume lattice QCD calculations offer the possibility of extracting resonance parameters from the energy-dependent elastic phase-shift computed using the Luscher technique. In this letter, as a trial of the method, ... -
Polynomial Filtered HMC: An Algorithm for lattice QCD with dynamical quarks
PEARDON, MICHAEL (2012)Polynomial approximations to the inverse of the fermion matrix are u sed to filter the dynamics of the upper energy scales in HMC simulations. The use of a multiple time-scale integration sc heme allows the filtered ... -
Spectroscopy of doubly and triply-charmed baryons from lattice QCD
PEARDON, MICHAEL (2013) -
Spectroscopy of doubly charmed baryons from lattice QCD
FERREIRA, MAURO; PEARDON, MICHAEL (2015)We present the ground and excited state spectra of doubly charmed baryons from lattice QCD with dynamical quark fields. Calculations are performed on anisotropic lattices of size 163×128, with inverse spacing in temporal ... -
Spectroscopy of triply-charmed baryons from lattice QCD
PEARDON, MICHAEL (2014) -
Toward the excited meson spectrum of dynamical QCD
PEARDON, MICHAEL; THOMAS, CHRISTOPHER (2010)We present a detailed description of the extraction of the highly excited isovector meson spectrum on dynamical anisotropic lattices using a new quark-field construction algorithm and a large variational basis of operators. ...