Sinead Ryan
(Trinity College Dublin)
17/06/2010, 16:40
Hadron spectroscopy
Preliminary results for the charmonium spectrum are presented. The calculation uses distilled quark propagators measured on the N_f=2+1 dynamical anisotropic lattices of the Hadron Spectrum Collaboration and includes an exploration of disconnected diagrams and decays relevant for threshold effects.
Ludmila Levkova
(University of Utah)
17/06/2010, 17:00
Hadron spectroscopy
We report our final results for the contributions of the
disconnected diagrams to the hyperfine splitting in charmonium.
Our study includes both the quenched and dynamical cases
on ensembles with lattice spacings of approximately 0.06 fm and 0.09 fm.
Our new approach tunes the charm quark mass so that the rest mass of the $\eta_c$
is close to its physical value. This method of...
Peng Hao
(Columbia University, USA)
17/06/2010, 17:20
Hadron spectroscopy
We extend our previous relativistic heavy quark (RHQ) charm calculations performed on the $32^3 \times 64$, $1/a=2.32$ GeV RBC/UKQCD lattice ensembles to states including bottom quarks. We calculate masses of bottomium, bottom-strange and bottom-light states, match and compare them to known experimental values. We also compare our results with those determined on the $24^3\times 64,...
Christian Wiese
(Humboldt-University Berlin)
17/06/2010, 17:40
Hadron spectroscopy
We compute the static-light baryon spectrum with N_f = 2 flavors of sea quarks using Wilson twisted mass lattice QCD. As valence quarks we consider unitary light quarks (with a corresponding pion mass of around 340 MeV) as well as partially quenched light quarks, which have the mass of the physical strange quark. We extract masses of states with isospin I = 0, I = 1/2 and I = 1, with light...
