Proposals
Contact: David Richards
2008
Spectral and Radiative Meson Physics of GlueX and CLEO-c
The use of radiative meson couplings as a tool for spectroscopy is a topic which spans
nuclear and high-energy physics, from the forthcoming photoproduction efforts of the GlueX
project to the radiative charmonium processes measured at CLEO-c. This proposal continues
previous work studying such quantities using lattice QCD methods. Herein we propose to
compute radiative matrix elements between mesons of various
JPC, including
excited states and exotics, in both the charm-quark and light-quark sectors.
Since addressing key questions in hadronic physics is a strategic goal of USQCD, this
proposal satisfies a criterion for a class-A proposal. We request 1.5M 6n proc-hours
on the JLab clusters.
Baryon Spectroscopy using Anisotropic Clover Lattices
We propose to employ the anisotropic Nf = 2+1 dynamical
clover configurations for a study of the baryon resonance spectrum for the baryons that
can be constructed from u=d and s quarks. We will perform the computation at three values
of the pion mass: mπ = 875; 560 and 315 MeV, and
employ two lattice volumes at the lightest mass with the aim of delineating single- from
two-body energies. We request the equivalent of 2.1M 6n-node hours.
2007
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