Speaker
Jeremy Green
(Center for Theoretical Physics, Massachusetts Institute of Technology)
Description
Using lattice QCD, a diquark can be studied in a gauge-invariant manner by binding it to a static quark in a heavy-light-light hadron. We compute the simultaneous two-quark density of a diquark, including corrections for periodic boundary conditions. We define a correlation function to isolate the intrinsic correlations of the diquark and reduce the effects caused by the presence of the static quark. Away from the immediate vicinity of the static quark, the diquark has a consistent shape, with much stronger correlations seen in the good (scalar) diquark than in the bad (vector) diquark. We present results for pion mass 293 MeV in unquenched QCD and for pion mass 893 MeV in quenched QCD, and discuss the dependence of the spatial size on the pion mass.
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Primary author
Jeremy Green
(Center for Theoretical Physics, Massachusetts Institute of Technology)
Co-authors
Prof.
John Negele
(Center for Theoretical Physics, Massachusetts Institute of Technology)
Prof.
Michael Engelhardt
(Physics Department, New Mexico State University)
Mr
Patrick Varilly
(Department of Physics, University of California, Berkeley)
